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* 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
Execute a command upon an event. More information: https://www.gnu.org/software/bash/manual/bash.html#index-trap.
- List the available event names (e.g.
SIGWINCH):
trap -l
- List the commands and the names of the expected events:
trap -p
- Execute a command when a signal is received:
trap 'echo "Caught signal {{SIGHUP}}"' {{SIGHUP}}
- Remove commands:
trap - {{SIGHUP}} {{SIGINT}}