linux - 一次运行所有基本命令，然后在它们全部完成后按顺序运行

Question

我将如何运行如下几个命令，以便在所有后台命令完成后执行(清理)最后一行？

echo "oyoy 1" > file1 &
echo "yoyoyo 2" > file2 &
rm -f file1 file2

当然， echo 命令对我来说是不同的，需要很长时间才能完成(我可以手动删除文件或使用我知道的另一个脚本，但我想知道如何在一个脚本中完成此操作..)

谢谢!

Answer 1

来自 the docs

 wait [n ...]
      Wait  for each specified process and return its termination sta-
      tus.  Each n may be a process ID or a job  specification;  if  a
      job  spec  is  given,  all  processes in that job's pipeline are
      waited for.  If n is not given, all currently active child  pro-
      cesses  are  waited  for,  and  the return status is zero.  If n
      specifies a non-existent process or job, the  return  status  is
      127.   Otherwise,  the  return  status is the exit status of the
      last process or job waited for.

所以你可以像这样等待后台进程完成:

echo "oyoy 1" > file1 &
echo "yoyoyo 2" > file2 &
wait
rm -f file1 file2