如果你在搜索这个问题，可能是由于你采用的普通用户登录，而使用了visudo的授权方式。可以参考我之前写过的内容：《基于visudo(/etc/sudoets)的用户权限管理方案》。
为了更好的和上一篇文章配合，方便普通用户使用，因此这篇普通用户可能遇到问题的文章诞生了！SourceByrd's Weblog-https://note.t4x.org/error/sudo-cd-command-not-found/
①：vim编辑文件，忘记sudo
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[byrd@Byrd ~]$ vim /root/hello.txt #在/root目录下编辑一个hello.txt的文件 [byrd@Byrd ~]$ vim /root/hello.txt :w !sudo tee % #%当前文件 [sudo] password for byrd: 用户密码 hello Press ENTER or type command to continue q!退出即可 |
②：执行命令忘记加sudo
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[byrd@Byrd ~]$ tail -1 /root/hello.txt tail: cannot open `/root/hello.txt' for reading: Permission denied [byrd@Byrd ~]$ sudo !! sudo tail -1 /root/hello.txt hello |
③：执行shell内置命令的时候报错(类似sudo: cd: command not found)
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[byrd@Byrd ~]$ cd /root #普通用户想要进入root的目录 -bash: cd: /root: Permission denied #权限不允许 [byrd@Byrd ~]$ sudo cd /root #sudo总可以了吧？ sudo: cd: command not found #呃？居然提示命令没有找到？ [byrd@Byrd ~]$ type cd #cd的类型是内部命令哦！ cd is a shell builtin [byrd@Byrd ~]$ type ls ls is aliased to `ls --color=auto' #这个做了alias定义 [byrd@Byrd ~]$ type ifconfig #应用程序命令 ifconfig is /sbin/ifconfig [byrd@Byrd ~]$ type umask #shell内部命令哦！ umask is a shell builtin 执行类似的命令可以： [byrd@Byrd ~]$ sudo bash [sudo] password for byrd: [root@Byrd byrd]# |
更多参考：
-t type The -t (type) option causes the new (SELinux) security context to have the type specified by type. Ifno type is specified, the default type is derived from the specified role.
SUDO_EDITOR Default editor to use in -e (sudoedit) mode.
VISUAL Default editor to use in -e (sudoedit) mode if SUDO_EDITOR is not set.
内建命令：
bash, :, ., [, alias, bg, bind, break, builtin, caller, cd, command, compgen, complete, compopt, continue,
declare, dirs, disown, echo, enable, eval, exec, exit, export, false, fc, fg, getopts, hash, help, history, jobs,
kill, let, local, logout, mapfile, popd, printf, pushd, pwd, read, readonly, return, set, shift, shopt, source,
suspend, test, times, trap, true, type, typeset, ulimit, umask, unalias, unset, wait - bash built-in commands,
see bash(1)
外部命令：略！SourceByrd's Weblog-https://note.t4x.org/error/sudo-cd-command-not-found/
申明：本文由BYRD原创(基于Centos6.4 X64)，未经许可禁止转载！SourceByrd's Weblog-https://note.t4x.org/error/sudo-cd-command-not-found/ SourceByrd's Weblog-https://note.t4x.org/error/sudo-cd-command-not-found/
申明：除非注明Byrd's Blog内容均为原创,未经许可禁止转载!详情请阅读版权申明!
