linux按列分割cut

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.2cto.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.2cto.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>.