Truncate long strings in columns and use custom header names

column -s: -t -n . -N USERNAME,PASS,UID,GID,NAME,HOMEDIR,SHELL -T NAME /etc/passwd|sed "1,2 i $(printf %80s|tr ' ' '=')"
Using the --table-truncate ( -T ) option, you can specify the columns you will allow to be truncated. This helps when you have some columns that are unusually long, or a small terminal window. In this example we will print out the /etc/passwd file in columns. We are using a colon as our separator ( -s: ), defining that we want table output ( -t ), defining the column names ( -N ) and allowing the column NAME to be truncated ( -T ).
Sample Output 
================================================================================
USERNAME    PASS  UID    GID    NAME    HOMEDIR                   SHELL
================================================================================
root        x     0      0      root    /root                     /bin/bash
bin         x     1      1      bin     /bin                      /bin/false
daemon      x     2      2      daemon  /sbin                     /bin/false
adm         x     3      4      adm     /var/adm                  /bin/false
lp          x     4      7      lp      /var/spool/lpd            /bin/false
sync        x     5      0      sync    /sbin                     /bin/sync
shutdown    x     6      0      shutdo  /sbin                     /sbin/shutdown
halt        x     7      0      halt    /sbin                     /sbin/halt
news        x     9      13     news    /var/spool/news           /bin/false
uucp        x     10     14     uucp    /var/spool/uucp           /bin/false

4
By: wuseman1
2022-08-22 09:29:14
column sed shell column home, headers uid COLUMNS passwd custom gid
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