Linux命令(108)之dirname

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linux命令之dirname

1.dirname介绍

linux命令dirname是用来获取文件的指定路径

2.dirname用法

dirname [参数] NAME

3.实例

3.1.获取文件的指定路径

命令：

dirname ztj.txt

OR

dirname /root/ztj.txt

OR

dirname /a/b/c/d

[root@rhel77 ~]# dirname ./ztj.txt . ---当前目录 [root@rhel77 ~]# dirname /root/ztj.txt /root [root@rhel77 ~]# dirname /a/b/c/d /a/b/c [root@rhel77 ~]# 

3.2.使用NUL而不是换行符分隔输出

命令：

dirname -z /a/b/c/d

[root@rhel77 ~]# dirname -z /a/b/c/d /a/b/c[root@rhel77 ~]# 

3.3.查看版本信息

命令：

dirname –version

[root@rhel77 ~]# dirname --version
dirname (GNU coreutils) 8.22
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by David MacKenzie and Jim Meyering.
[root@rhel77 ~]# 

3.4.查看帮助信息

命令：

dirname –help

[root@rhel77 ~]# dirname --help Usage: dirname [OPTION] NAME... Output each NAME with its last non-slash component and trailing slashes removed; if NAME contains no /'s, output '.' (meaning the current directory). -z, --zero separate output with NUL rather than newline --help display this help and exit --version output version information and exit Examples: dirname /usr/bin/ -> "/usr" dirname dir1/str dir2/str -> "dir1" followed by "dir2" dirname stdio.h -> "." GNU coreutils online help: <http://www.gnu.org/software/coreutils/> For complete documentation, run: info coreutils 'dirname invocation' You have new mail in /var/spool/mail/root [root@rhel77 ~]#