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linux按列分割cut

发布时间:2014-09-05 15:45:12作者:知识屋


linux按列分割cut
 
按列获取数据,例如ps命令中,我想获取UID这一列。使用ps | cut -c 44-47便可以。 
 
Shell代码  
$ ps  
      PID    PPID    PGID     WINPID  TTY  UID    STIME COMMAND  
     5204       1    5204       5204  con  500 11:53:47 /bin/sh  
     4716    5204    4716       2724  con  500 11:54:05 /bin/ps  
  www.zhishiwu.com  
Shell代码  
$ ps | cut  -c 44-47  
UID  
500  
500  
500  
 
cut有几个常用参数,-c 指定开始字符位置, -b 指定开始字节位置, -f 指定开始分割节点位置。 
cut --help 
Sehll代码  
$ cut --help  
Usage: cut [OPTION]... [FILE]...  
Print selected parts of lines from each FILE to standard output.  
  
  -b, --bytes=LIST        output only these bytes  
  -c, --characters=LIST   output only these characters  
  -d, --delimiter=DELIM   use DELIM instead of TAB for field delimiter  
  -f, --fields=LIST       output only these fields  
  -n                      (ignored)  
  -s, --only-delimited    do not print lines not containing delimiters  
      --output-delimiter=STRING  use STRING as the output delimiter  
                            the default is to use the input delimiter  
      --help              display this help and exit  
      --version           output version information and exit  
    www.zhishiwu.com  
Use one, and only one of -b, -c or -f.  Each LIST is made up of one  
range, or many ranges separated by commas.  Each range is one of:  
  
  N     N'th byte, character or field, counted from 1  
  N-    from N'th byte, character or field, to end of line  
  N-M   from N'th to M'th (included) byte, character or field  
  -M    from first to M'th (included) byte, character or field  
  
With no FILE, or when FILE is -, read standard input.  
  
Report bugs to <bug-textutils@gnu.org>.  
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