| 1 | osh and ysh accept standard POSIX shell flags, like:
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| 2 |
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| 3 | bin/osh -o errexit -c 'false'
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| 4 | bin/ysh -n myfile.ysh
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| 5 | bin/ysh +o errexit -c 'false; echo ok'
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| 6 |
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| 7 | They also accept these flags:
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| 8 |
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| 9 | --eval FILE
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| 10 | Evaluate the given file, similar to the 'source' builtin. Specify it
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| 11 | multiple times to run multiple files.
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| 12 |
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| 13 | If the errexit option is on (e.g. in YSH), then the shell stops when $?
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| 14 | is non-zero after evaluating a file. The $0 value is set to FILE.
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| 15 |
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| 16 | --eval-pure FILE
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| 17 | Like --eval, but disallow I/O (known as "pure mode").
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| 18 |
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| 19 | --location-str
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| 20 | Use this string to display error messages.
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| 21 | See 'help sourceCode' for an example.
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| 22 |
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| 23 | --location-start-line
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| 24 | Use this line number offset to display error messages.
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| 25 |
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| 26 | --tool Run a tool instead of the shell (cat-em|syntax-tree)
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| 27 | -n Parse the program but don't execute it. Print the AST.
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| 28 | --ast-format FMT The format for the AST (text|text-abbrev)
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| 29 |
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| 30 | Examples:
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| 31 |
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| 32 | ysh --eval one.ysh --eval two.ysh -c 'echo hi' # Run 2 files first
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| 33 | osh -n -c 'hello' # pretty-print the AST
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| 34 | ysh --ast-format text -n -c 'hello' # in unabridged format
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