BASH如何在脚本终止时执行命令?

是的,你可以使用“trap”命令。点击CTRL-C会发送一个SIGINT,因此我们可以使用trap来捕捉:

#!/bin/bash

trap "echo hello world" INT

sleep 10

如果在运行时按CTRL-C,它将执行命令( echo hello world

 $ help trap

 trap: trap [-lp] [arg signal_spec ...]
     The command ARG is to be read and executed when the shell receives
     signal(s) SIGNAL_SPEC.  If ARG is absent (and a single SIGNAL_SPEC
     is supplied) or `-', each specified signal is reset to its original
     value.  If ARG is the null string each SIGNAL_SPEC is ignored by the
     shell and by the commands it invokes.  If a SIGNAL_SPEC is EXIT (0)
     the command ARG is executed on exit from the shell.  If a SIGNAL_SPEC
     is DEBUG, ARG is executed after every simple command.  If the`-p' option
     is supplied then the trap commands associated with each SIGNAL_SPEC are
     displayed.  If no arguments are supplied or if only `-p' is given, trap
     prints the list of commands associated with each signal.  Each SIGNAL_SPEC
     is either a signal name in <signal.h> or a signal number.  Signal names
     are case insensitive and the SIG prefix is optional.  `trap -l' prints
     a list of signal names and their corresponding numbers.  Note that a
     signal can be sent to the shell with "kill -signal $$".

使用陷阱。

trap "do_something" SIGINT

其中“do_something”是命令或函数名。