52 lines
1.2 KiB
Text
52 lines
1.2 KiB
Text
'\" Copyright (C) 1998-2025 Free Software Foundation, Inc.
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'\"
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'\" This is free software. You may redistribute copies of it under the terms
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'\" of the GNU General Public License <https://www.gnu.org/licenses/gpl.html>.
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'\" There is NO WARRANTY, to the extent permitted by law.
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[NAME]
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env \- run a program in a modified environment
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[DESCRIPTION]
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.\" Add any additional description here
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[SCRIPT OPTION HANDLING]
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The
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.B \-S
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option allows specifying multiple arguments in a script.
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Running a script named
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.B 1.pl
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containing the following first line:
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.PP
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.RS
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.nf
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#!/usr/bin/env \-S perl \-w \-T
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\&...
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.fi
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.RE
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.PP
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Will execute
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.B "perl \-w \-T 1.pl"
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.PP
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Without the
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.B '\-S'
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parameter the script will likely fail with:
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.PP
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.RS
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.nf
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/usr/bin/env: 'perl \-w \-T': No such file or directory
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.fi
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.RE
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.PP
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See the full documentation for more details.
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.PP
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[NOTES]
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POSIX's exec(3p) pages says:
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.RS
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"many existing applications wrongly assume that they start with certain
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signals set to the default action and/or unblocked.... Therefore, it is best
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not to block or ignore signals across execs without explicit reason to do so,
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and especially not to block signals across execs of arbitrary (not closely
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cooperating) programs."
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.RE
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[SEE ALSO]
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sigaction(2), sigprocmask(2), signal(7)
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