Linux命令行大全：第2版

• 三諼愺

  2018-07-29
  The #! character sequence is, in fact, a special construct called a shebang. The shebang is used to tell the system the name of the interpreter that should be used to execute the script that follows. Every shell script should include this as its first line.
• angwer

  2015-02-10
  When no argument is passed, the exit status defaults to 0.