Number of Syscalls ID dash ash mksh bash-5 zsh bash-4 ysh-py osh-py Description 01 47 69 66 142 165 153 4859 4860 echo hi 02 122 145 156 247 262 269 4940 4941 date 03 49 71 66 143 160 154 4859 4860 date ; 04 123 146 157 283 269 305 4862 4943 trap 'echo mytrap' EXIT; date 05 123 146 157 249 266 271 4942 4943 date; echo hi 06 123 146 157 249 266 271 4942 4943 echo hi; date 07 191 216 241 335 356 355 5016 5017 date; date 08 191 216 241 335 357 355 5016 5017 { date; date; } 09 191 216 241 335 357 355 5016 5017 date; { date; } 10 201 225 250 353 387 373 5029 5030 . _tmp/sourced.sh 11 55 78 81 173 198 182 4859 4874 (echo hi) 12 122 145 158 255 268 277 4859 4941 (date) 13 122 145 158 263 274 285 4859 4941 ( ( date ) ) 14 123 146 159 265 278 287 4859 4943 ( ( date ) ); echo hi 15 123 146 159 257 272 279 4859 4943 echo hi; (date) 16 123 146 159 257 272 279 4859 4943 echo hi; (date;) 17 56 79 82 174 202 183 4859 4875 echo hi; (echo hi;) 18 124 147 173 258 276 301 4859 4944 echo hi; (echo hi; date) 19 56 79 82 175 202 184 4859 4876 ( echo hi ); echo hi 20 130 151 164 250 265 272 4949 4950 date > /tmp/redir.txt 21 125 148 166 258 271 280 4859 4950 (date;) > /tmp/sentence.txt 22 209 230 276 357 371 390 5039 5040 date 2> /tmp/stderr.txt | wc -l 23 55 75 73 152 172 163 4868 4869 echo hi > /tmp/redir.txt 24 58 81 89 176 200 185 4859 4883 (echo hi;) > /tmp/sentence.txt 25 144 165 202 283 302 303 4974 4975 echo hi 2> /tmp/stderr.txt | wc -l 26 131 154 172 279 299 300 4859 4957 (date; echo hi) 27 131 154 179 266 281 308 4949 4950 echo $(date) 28 63 87 101 184 208 192 4882 4883 echo $(echo hi) 29 131 154 179 296 287 316 4859 4950 echo $( ( date ) ) 30 140 164 195 299 316 319 4859 4967 echo $( ( date ); echo hi ) 31 56 79 82 175 202 184 4859 4876 ( echo hi ); echo done 32 203 226 271 354 368 387 5032 5033 date | wc -l 33 203 226 271 354 367 387 4859 5033 ! date | wc -l 34 136 159 195 280 300 300 4965 4966 echo a | wc -l 35 136 159 195 280 360 300 4965 4966 command echo a | wc -l 36 203 226 271 354 367 416 5032 5033 command date | wc -l 37 203 226 272 354 368 416 4859 5033 ! command date | wc -l 38 203 226 272 362 374 395 4859 5033 ( date ) | wc -l 39 167 219 226 315 307 334 4982 4983 date | read x 40 137 160 196 281 306 301 4966 4967 { echo a; echo b; } | wc -l 41 138 161 197 283 310 303 4968 4969 { echo a; echo b; } | wc -l; echo done 42 205 228 286 387 380 419 5035 5036 { echo a; date; } | wc -l 43 137 160 196 281 307 301 4859 4967 ( echo a; echo b ) | wc -l 44 137 160 196 291 314 311 4859 4967 ( echo a; echo b ) | ( wc -l ) 45 138 161 212 322 325 341 4859 4968 { echo prefix; ( echo a; echo b ); } | ( wc -l ) 46 62 84 90 200 206 210 4859 4873 echo hi & wait 47 129 151 167 274 273 297 4859 4940 date & wait 48 149 169 206 306 317 327 4859 4961 echo hi | wc -l & wait 49 216 232 282 380 384 414 4859 5028 date | wc -l & wait 50 130 152 168 310 278 333 4859 4942 trap 'echo mytrap' EXIT; date & wait 51 213 233 283 432 388 466 4859 5030 trap 'echo mytrap' EXIT; date | wc -l & wait 52 138 160 179 341 308 362 4859 4954 { trap 'echo mytrap' EXIT; date; } & wait TOTAL 7021 8227 9452 14464 15168 15650 255139 257783