运行./run_func_and_get_pid.sh有以下内容
#!/bin/bash
run () {
while true
do
"$@" & echo -n $! > duh && echo "" `cat duh` `cat dih`
sleep 5
done
}
run echo -n my name is mudd & echo -n $$ > dih
输出
my name is mudd 392056 392054
my name is mudd 392060 392054
my name is mudd 392066 392054
my name is mudd 392070 392054
my name is mudd 392074 392054
my name is mudd 392082 392054
my name is mudd 392087 392054
my name is mudd 392091 392054
my name is mudd 392095 392054
my name is mudd 392122 392054
my name is mudd 392126 392054
my name is mudd 392130 392054
my name is mudd 392134 392054
my name is mudd 392139 392054
my name is mudd 392143 392054
my name is mudd 392147 392054
my name is mudd 392151 392054
my name is mudd 392160 392054
my name is mudd 392164 392054
. . .
这篇文章表明这392054将是 pidrun_func_and_get_pid.sh但后来我明白了
$ ps aux | grep run_func
. . .
user 392055 0.0 0.0 9632 1852 pts/5 S 09:51 0:00 /bin/bash ./run_func_and_get_pid.sh
user 398763 0.0 0.0 9040 2508 pts/6 S+ 10:10 0:00 grep -I --color=auto run_func
$ ps aux | grep 392054
user 398975 0.0 0.0 9040 720 pts/6 S+ 10:13 0:00 grep -I --color=auto 392054
我只能猜测这392054是我运行命令时生成的 bash shell。无论进程是什么，它都已经退出了。
如何获取正在运行的脚本的 PID，而不是脚本的父级？
