摘要： for|case|select|while and until Command-Line Options and Typed Variables Command-Line Options Typical UNIX commands have the form command [-options]ar 阅读全文

摘要： Flow Control Exit Status Every UNIX command, whether it comes from source code in C, some other language, or a shell script/function, returns an integ 阅读全文

摘要： Advanced Examples: pushd and popd Task 4-8 The functions pushd and popd implement a stack of directories that enable you to moveto another directory t 阅读全文