| 1 | ## oils_failures_allowed: 3
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| 2 | ## oils_cpp_failures_allowed: 4
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| 3 | ## compare_shells: dash bash mksh
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| 4 |
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| 5 | # Job control constructs:
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| 6 | # & terminator (instead of ;)
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| 7 | # $! -- last PID
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| 8 | # wait builtin (wait -n waits for next)
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| 9 | #
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| 10 | # Only interactive:
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| 11 | # fg
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| 12 | # bg
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| 13 | # %1 -- current job
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| 14 |
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| 15 | #### wait with nothing to wait for
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| 16 | wait
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| 17 | ## status: 0
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| 18 |
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| 19 | #### wait -n with arguments - arguments are respected
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| 20 | case $SH in dash|mksh) exit ;; esac
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| 21 |
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| 22 | echo x &
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| 23 |
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| 24 | # here, you can't tell if it's -n or the other
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| 25 | wait -n $!
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| 26 | echo status=$?
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| 27 |
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| 28 | # by the bash error, you can tell which is preferred
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| 29 | wait -n $! bad 2>err.txt
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| 30 | echo status=$?
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| 31 | echo
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| 32 |
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| 33 | n=$(wc -l < err.txt)
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| 34 | if test "$n" -gt 0; then
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| 35 | echo 'got error lines'
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| 36 | fi
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| 37 |
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| 38 | ## STDOUT:
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| 39 | x
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| 40 | status=0
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| 41 | status=127
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| 42 |
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| 43 | got error lines
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| 44 | ## END
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| 45 | ## N-I dash/mksh STDOUT:
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| 46 | ## END
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| 47 |
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| 48 | #### wait -n with nothing to wait for
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| 49 | # The 127 is STILL overloaded. Copying bash for now.
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| 50 | wait -n
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| 51 | ## status: 127
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| 52 | ## N-I dash status: 2
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| 53 | ## N-I mksh status: 1
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| 54 |
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| 55 | #### wait with jobspec syntax %nonexistent
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| 56 | wait %nonexistent
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| 57 | ## status: 127
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| 58 | ## OK dash status: 2
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| 59 |
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| 60 | #### wait with invalid PID
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| 61 | wait 12345678
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| 62 | ## status: 127
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| 63 |
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| 64 | #### wait with invalid arg
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| 65 | wait zzz
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| 66 | ## status: 2
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| 67 | ## OK bash status: 1
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| 68 | # mksh confuses a syntax error with 'command not found'!
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| 69 | ## BUG mksh status: 127
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| 70 |
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| 71 | #### wait for N parallel jobs
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| 72 |
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| 73 | for i in 3 2 1; do
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| 74 | { sleep 0.0$i; exit $i; } &
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| 75 | done
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| 76 | wait
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| 77 |
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| 78 | # status is lost
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| 79 | echo status=$?
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| 80 |
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| 81 | ## STDOUT:
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| 82 | status=0
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| 83 | ## END
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| 84 |
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| 85 | #### wait for N parallel jobs and check failure
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| 86 |
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| 87 | set -o errexit
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| 88 |
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| 89 | pids=''
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| 90 | for i in 3 2 1; do
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| 91 | { sleep 0.0$i; echo $i; exit $i; } &
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| 92 | pids="$pids $!"
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| 93 | done
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| 94 |
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| 95 | for pid in $pids; do
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| 96 | set +o errexit
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| 97 | wait $pid
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| 98 | status=$?
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| 99 | set -o errexit
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| 100 |
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| 101 | echo status=$status
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| 102 | done
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| 103 |
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| 104 | ## STDOUT:
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| 105 | 1
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| 106 | 2
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| 107 | 3
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| 108 | status=3
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| 109 | status=2
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| 110 | status=1
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| 111 | ## END
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| 112 |
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| 113 | #### Builtin in background
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| 114 | echo async &
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| 115 | wait
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| 116 | ## stdout: async
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| 117 |
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| 118 | #### External command in background
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| 119 | sleep 0.01 &
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| 120 | wait
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| 121 | ## stdout-json: ""
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| 122 |
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| 123 | #### Start background pipeline, wait $pid
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| 124 | echo hi | { exit 99; } &
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| 125 | echo status=$?
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| 126 | wait $!
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| 127 | echo status=$?
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| 128 | echo --
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| 129 |
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| 130 | pids=''
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| 131 | for i in 3 2 1; do
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| 132 | sleep 0.0$i | echo i=$i | ( exit $i ) &
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| 133 | pids="$pids $!"
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| 134 | done
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| 135 | #echo "PIDS $pids"
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| 136 |
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| 137 | for pid in $pids; do
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| 138 | wait $pid
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| 139 | echo status=$?
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| 140 | done
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| 141 |
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| 142 | # Not cleaned up
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| 143 | if false; then
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| 144 | echo 'DEBUG'
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| 145 | jobs --debug
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| 146 | fi
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| 147 |
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| 148 | ## STDOUT:
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| 149 | status=0
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| 150 | status=99
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| 151 | --
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| 152 | status=3
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| 153 | status=2
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| 154 | status=1
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| 155 | ## END
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| 156 |
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| 157 | #### Start background pipeline, wait %job_spec
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| 158 | case $SH in mksh) exit ;; esac # flakiness?
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| 159 |
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| 160 | echo hi | { exit 99; } &
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| 161 | echo status=$?
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| 162 | wait %1
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| 163 | echo status=$?
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| 164 | ## STDOUT:
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| 165 | status=0
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| 166 | status=99
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| 167 | ## END
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| 168 | ## BUG mksh STDOUT:
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| 169 | ## END
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| 170 |
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| 171 | #### Wait for job and PIPESTATUS
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| 172 |
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| 173 | # foreground
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| 174 | { echo hi; exit 55; } | false
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| 175 | echo fore status=$? pipestatus=${PIPESTATUS[@]}
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| 176 |
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| 177 | # background
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| 178 | { echo hi; exit 44; } | false &
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| 179 | echo back status=$? pipestatus=${PIPESTATUS[@]}
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| 180 |
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| 181 | # wait for pipeline
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| 182 | wait %+
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| 183 | #wait %1
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| 184 | #wait $!
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| 185 | echo wait status=$? pipestatus=${PIPESTATUS[@]}
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| 186 |
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| 187 | ## STDOUT:
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| 188 | fore status=1 pipestatus=55 1
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| 189 | back status=0 pipestatus=0
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| 190 | wait status=1 pipestatus=1
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| 191 | ## END
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| 192 | ## N-I dash status: 2
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| 193 | ## N-I dash STDOUT:
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| 194 | ## END
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| 195 |
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| 196 | #### Wait for job and PIPESTATUS - cat
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| 197 |
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| 198 | # foreground
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| 199 | exit 55 | ( cat; exit 99 )
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| 200 | echo fore status=$? pipestatus=${PIPESTATUS[@]}
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| 201 |
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| 202 | # background
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| 203 | exit 44 | ( cat; exit 88 ) &
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| 204 | echo back status=$? pipestatus=${PIPESTATUS[@]}
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| 205 |
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| 206 | # wait for pipeline
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| 207 | wait %+
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| 208 | #wait %1
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| 209 | #wait $!
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| 210 | echo wait status=$? pipestatus=${PIPESTATUS[@]}
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| 211 | echo
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| 212 |
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| 213 | # wait for non-pipeline
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| 214 | ( exit 77 ) &
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| 215 | wait %+
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| 216 | echo wait status=$? pipestatus=${PIPESTATUS[@]}
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| 217 |
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| 218 | ## STDOUT:
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| 219 | fore status=99 pipestatus=55 99
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| 220 | back status=0 pipestatus=0
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| 221 | wait status=88 pipestatus=88
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| 222 |
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| 223 | wait status=77 pipestatus=77
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| 224 | ## END
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| 225 | ## N-I dash status: 2
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| 226 | ## N-I dash STDOUT:
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| 227 | ## END
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| 228 |
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| 229 | #### Brace group in background, wait all
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| 230 | { sleep 0.09; exit 9; } &
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| 231 | { sleep 0.07; exit 7; } &
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| 232 | wait # wait for all gives 0
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| 233 | echo "status=$?"
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| 234 | ## stdout: status=0
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| 235 |
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| 236 | #### Wait on background process PID
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| 237 | { sleep 0.09; exit 9; } &
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| 238 | pid1=$!
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| 239 | { sleep 0.07; exit 7; } &
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| 240 | pid2=$!
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| 241 | wait $pid2
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| 242 | echo "status=$?"
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| 243 | wait $pid1
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| 244 | echo "status=$?"
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| 245 | ## STDOUT:
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| 246 | status=7
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| 247 | status=9
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| 248 | ## END
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| 249 |
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| 250 | #### Wait on multiple specific IDs returns last status
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| 251 | { sleep 0.08; exit 8; } &
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| 252 | jid1=$!
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| 253 | { sleep 0.09; exit 9; } &
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| 254 | jid2=$!
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| 255 | { sleep 0.07; exit 7; } &
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| 256 | jid3=$!
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| 257 | wait $jid1 $jid2 $jid3 # NOTE: not using %1 %2 %3 syntax on purpose
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| 258 | echo "status=$?" # third job I think
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| 259 | ## stdout: status=7
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| 260 |
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| 261 | #### wait -n
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| 262 | case $SH in dash|mksh) return ;; esac
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| 263 |
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| 264 | { sleep 0.09; exit 9; } &
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| 265 | { sleep 0.03; exit 3; } &
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| 266 | wait -n
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| 267 | echo "status=$?"
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| 268 | wait -n
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| 269 | echo "status=$?"
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| 270 | ## STDOUT:
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| 271 | status=3
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| 272 | status=9
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| 273 | ## END
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| 274 | ## N-I dash/mksh stdout-json: ""
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| 275 |
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| 276 | #### Async for loop
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| 277 | for i in 1 2 3; do
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| 278 | echo $i
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| 279 | sleep 0.0$i
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| 280 | done &
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| 281 | wait
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| 282 | ## STDOUT:
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| 283 | 1
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| 284 | 2
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| 285 | 3
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| 286 | ## END
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| 287 | ## status: 0
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| 288 |
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| 289 | #### Background process doesn't affect parent
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| 290 | echo ${foo=1}
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| 291 | echo $foo
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| 292 | echo ${bar=2} &
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| 293 | wait
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| 294 | echo $bar # bar is NOT SET in the parent process
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| 295 | ## STDOUT:
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| 296 | 1
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| 297 | 1
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| 298 | 2
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| 299 |
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| 300 | ## END
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| 301 |
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| 302 | #### Background process and then a singleton pipeline
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| 303 |
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| 304 | # This was inspired by #416, although that symptom there was timing, so it's
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| 305 | # technically not a regression test. It's hard to test timing.
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| 306 |
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| 307 | { sleep 0.1; exit 42; } &
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| 308 | echo begin
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| 309 | ! true
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| 310 | echo end
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| 311 | wait $!
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| 312 | echo status=$?
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| 313 | ## STDOUT:
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| 314 | begin
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| 315 | end
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| 316 | status=42
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| 317 | ## END
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| 318 |
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| 319 | #### jobs prints one line per job
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| 320 | sleep 0.1 &
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| 321 | sleep 0.1 | cat &
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| 322 |
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| 323 | # dash doesn't print if it's not a terminal?
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| 324 | jobs | wc -l
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| 325 |
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| 326 | ## STDOUT:
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| 327 | 2
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| 328 | ## END
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| 329 | ## BUG dash STDOUT:
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| 330 | 0
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| 331 | ## END
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| 332 |
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| 333 | #### jobs -p prints one line per job
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| 334 | sleep 0.1 &
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| 335 | sleep 0.1 | cat &
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| 336 |
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| 337 | jobs -p > tmp.txt
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| 338 |
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| 339 | cat tmp.txt | wc -l # 2 lines, one for each job
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| 340 | cat tmp.txt | wc -w # each line is a single "word"
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| 341 |
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| 342 | ## STDOUT:
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| 343 | 2
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| 344 | 2
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| 345 | ## END
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| 346 |
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| 347 |
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| 348 | #### No stderr spew when shell is not interactive
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| 349 |
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| 350 | # in interactive shell, this prints 'Process' or 'Pipeline'
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| 351 | sleep 0.01 &
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| 352 | sleep 0.01 | cat &
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| 353 | wait
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| 354 |
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| 355 | ## STDOUT:
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| 356 | ## END
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| 357 | ## STDERR:
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| 358 | ## END
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| 359 |
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| 360 |
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| 361 | #### YSH wait --all
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| 362 | case $SH in dash|bash|mksh) exit ;; esac
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| 363 |
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| 364 | sleep 0.01 &
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| 365 | (exit 55) &
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| 366 | true &
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| 367 | wait
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| 368 | echo wait $?
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| 369 |
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| 370 | sleep 0.01 &
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| 371 | (exit 44) &
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| 372 | true &
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| 373 | wait --all
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| 374 | echo wait --all $?
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| 375 |
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| 376 | ## STDOUT:
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| 377 | wait 0
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| 378 | wait --all 1
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| 379 | ## END
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| 380 |
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| 381 | ## N-I dash/bash/mksh STDOUT:
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| 382 | ## END
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| 383 |
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| 384 | #### YSH wait --verbose
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| 385 | case $SH in dash|bash|mksh) exit ;; esac
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| 386 |
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| 387 | sleep 0.01 &
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| 388 | (exit 55) &
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| 389 | wait --verbose
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| 390 | echo wait $?
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| 391 |
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| 392 | (exit 44) &
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| 393 | sleep 0.01 &
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| 394 | wait --all --verbose
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| 395 | echo wait --all $?
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| 396 |
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| 397 | ## STDOUT:
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| 398 | wait 0
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| 399 | wait --all 1
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| 400 | ## END
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| 401 |
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| 402 | ## N-I dash/bash/mksh STDOUT:
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| 403 | ## END
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| 404 |
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| 405 | #### Signal message for killed background job
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| 406 | case $SH in dash|mksh) exit ;; esac
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| 407 |
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| 408 | sleep 1 &
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| 409 | kill -HUP $!
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| 410 | wait $! 2>err.txt
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| 411 | echo status=$?
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| 412 | grep -o "Hangup" err.txt
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| 413 | ## status: 0
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| 414 | ## STDOUT:
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| 415 | status=129
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| 416 | Hangup
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| 417 | ## END
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| 418 | ## STDERR:
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| 419 | ## END
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| 420 |
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| 421 | ## N-I dash/mksh STDOUT:
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| 422 | ## END
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