[英]Bash script to auto-kill a process after set amount of time, but also handle user interrupt
我有一个非常简单的Bash脚本,该脚本在批处理模式下运行top
达x秒,将输出保存到文件中,并在设置的时间后自动杀死top
#!/bin/bash
# Runs top under batch mode with renewal period set to $1, saves the data to file $2, and kills the process after $3 minutes
top -b -d $1 > $2 &
PROC=$!
(sleep $3m; kill $PROC) &
事实是,我还希望能够使用这样的方法来处理脚本进程的终止(我宁愿选择kill而不是kill)
ctrl_c()
# run if user hits control-c
{
echo -en "\n*** Done ***\n"
cleanup # some cleanup function
kill $PROC
}
# trap keyboard interrupt (control-c)
trap ctrl_c SIGINT
while true; do read x; sleep $1; done
有更整齐的方法吗?
为什么不给top
迭代次数为运行:
(( total_runtime = $3 * 60 ))
(( iterations = total_runtime / $1 ))
top -b -d $1 -n ${iterations}
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