tldr/pages/common/trap.md

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2018-02-02 21:39:19 +00:00
# trap
common/*: update pages of some POSIX special built-in utilities (#11956) * exec, export, readonly, set, shift, trap: replace command descriptions * exec, exit, export, readonly, set, shift, trap, exec, export: replace example descriptions * exec, trap: replace "More information" links * trap: remove prefix "SIG" from some command arguments Although POSIX allows implementations to specify signal names without the prefix "SIG", I will choose the most portable form. * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * set: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exec: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exit: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * readonly: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * set: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * shift: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * trap: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exec: explain environment of child process Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> --------- Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>
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> Execute a command upon an event.
> More information: <https://manned.org/trap.1posix>.
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common/*: update pages of some POSIX special built-in utilities (#11956) * exec, export, readonly, set, shift, trap: replace command descriptions * exec, exit, export, readonly, set, shift, trap, exec, export: replace example descriptions * exec, trap: replace "More information" links * trap: remove prefix "SIG" from some command arguments Although POSIX allows implementations to specify signal names without the prefix "SIG", I will choose the most portable form. * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * set: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exec: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exit: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * readonly: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * set: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * shift: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * trap: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exec: explain environment of child process Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> --------- Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>
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- List the commands and the names of the expected events:
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`trap`
2018-02-02 21:39:19 +00:00
common/*: update pages of some POSIX special built-in utilities (#11956) * exec, export, readonly, set, shift, trap: replace command descriptions * exec, exit, export, readonly, set, shift, trap, exec, export: replace example descriptions * exec, trap: replace "More information" links * trap: remove prefix "SIG" from some command arguments Although POSIX allows implementations to specify signal names without the prefix "SIG", I will choose the most portable form. * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * set: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exec: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exit: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * readonly: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * set: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * shift: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * trap: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exec: explain environment of child process Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> --------- Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>
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- Execute a command when a signal is received:
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common/*: update pages of some POSIX special built-in utilities (#11956) * exec, export, readonly, set, shift, trap: replace command descriptions * exec, exit, export, readonly, set, shift, trap, exec, export: replace example descriptions * exec, trap: replace "More information" links * trap: remove prefix "SIG" from some command arguments Although POSIX allows implementations to specify signal names without the prefix "SIG", I will choose the most portable form. * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * set: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exec: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exit: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * readonly: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * set: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * shift: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * trap: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exec: explain environment of child process Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> --------- Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>
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`trap 'echo "Caught signal {{SIGHUP}}"' {{HUP}}`
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common/*: update pages of some POSIX special built-in utilities (#11956) * exec, export, readonly, set, shift, trap: replace command descriptions * exec, exit, export, readonly, set, shift, trap, exec, export: replace example descriptions * exec, trap: replace "More information" links * trap: remove prefix "SIG" from some command arguments Although POSIX allows implementations to specify signal names without the prefix "SIG", I will choose the most portable form. * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * set: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exec: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exit: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * readonly: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * set: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * shift: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * trap: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exec: explain environment of child process Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> --------- Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>
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- Remove commands:
2018-02-02 21:39:19 +00:00
common/*: update pages of some POSIX special built-in utilities (#11956) * exec, export, readonly, set, shift, trap: replace command descriptions * exec, exit, export, readonly, set, shift, trap, exec, export: replace example descriptions * exec, trap: replace "More information" links * trap: remove prefix "SIG" from some command arguments Although POSIX allows implementations to specify signal names without the prefix "SIG", I will choose the most portable form. * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * set: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace term Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exec: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exit: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * export: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * readonly: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * set: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * shift: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * trap: replace Open Group link Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> * exec: explain environment of child process Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com> --------- Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>
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`trap - {{HUP}} {{INT}}`