- 命令集合(type – 說明怎樣解釋一個命令名 which – 顯示會執行哪個可執行程序 man – 顯示命令手冊頁 apropos – 顯示一系列適合的命令 info – 顯示命令 whatis – 顯示一個命令的簡潔描述 alias – 創建命令別名)
- type - 顯示命令的類型 (type command)
- which-顯示一個可執行程序的位置 (which command 注:內建命令和命令別名不顯示)
- help - 得到 shell 內建命令的幫助文檔 (help command 或者 command --help)
- man - 顯示程序手冊頁 (man [section] command 以下格式不一定都有)
章節 內容 1 用戶命令 2 程序接口內核系統調用 3 C 庫函數程序接口 4 特殊文件,比如說設備結點和驅動程序 5 文件格式 6 遊戲娛樂,如屏幕保護程序 7 其他方面 8 系統管理員命令 - apropos - 顯示適當的命令(apropos key 就是模糊的查找指令)
- whatis - 顯示非常簡潔的命令說明(名稱 + 一行命令說明)
- info - 顯示程序 Info 條目( info 用 n 和 p 可跳轉到索引節點,像超鏈接,但是不如man容易使用,反而效果不好)
- alias - 創建你自己的命令(alias name='String')
- 多用文檔和搜索
- 代碼操作
[me@linuxbox ~]$ type type type is a shell builtins [me@linuxbox ~]$ type ls ls is aliased to `ls --color=tty` [me@linuxbox ~]$ type cp cp is /bin/cp [me@linuxbox ~]$ which ls /bin/ls [me@linuxbox ~]$ which cd /usr/bin/which: no cd in (/opt/jre1.6.0_03/bin:/usr/lib/qt-3.3/bin:/usr/kerberos/bin:/opt/jre1 .6.0_03/bin:/usr/lib/ccache:/usr/local/bin:/usr/bin:/bin:/home/me/bin) [me@linuxbox ~]$ help cd cd: cd [-L|-P] [dir] Change ... [me@linuxbox ~]$ mkdir --help Usage: mkdir [OPTION] DIRECTORY... Create ... [me@linuxbox ~]$ man ls [me@linuxbox ~]$ man 5 passwd [me@linuxbox ~]$ apropos floppy create_floppy_devices (8) - udev callout to create all possible ... [me@linuxbox ~]$ whatis cd cd (1p) - change the working directory [me@linuxbox ~]$ info info File: coreutils.info, Node: ls invocation, Next: dir invocation, Up: Directory listing 10.1 `ls': List directory contents ================================== ... [me@linuxbox ~]$ cd /usr; ls; cd - bin games kerberos lib64 local share tmp ... [me@linuxbox ~]$ type test test is a shell builtin [me@linuxbox ~]$ type foo bash: type: foo: not found [me@linuxbox ~]$ alias foo='cd /usr; ls; cd -' [me@linuxbox ~]$ foo bin games kerberos lib64 local share tmp ... [me@linuxbox ~]$ type foo foo is aliased to `cd /usr; ls ; cd -' [me@linuxbox ~]$ unalias foo [me@linuxbox ~]$ type foo bash: type: foo: not found [me@linuxbox ~]$ type ls ls is aliased to 'ls --color=tty' [me@linuxbox ~]$ alias alias l.='ls -d .* --color=tty' ...
5.使用命令(快樂的LInux命令行)
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