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Full Discussion: Compare multiple files, and extract items that are common to ALL files only
Top Forums Shell Programming and Scripting Compare multiple files, and extract items that are common to ALL files only Post 302757385 by rdrtx1 on Thursday 17th of January 2013 12:19:52 PM
Old 01-17-2013
try:
Code:
awk '
!f[FILENAME] {for (i in t) if (!a[i]) delete t[i] ; delete a; f[FILENAME]=FILENAME}
NR==FNR {t[$0]=$0}
{a[$0]=$0}
END { for (i in t) if (!a[i]) delete t[i]; for (i in t) print i}
' file*

This User Gave Thanks to rdrtx1 For This Post:
Tzole
 

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LEARN ABOUT CENTOS

grub-editenv

GRUB-EDITENV(1) 						   User Commands						   GRUB-EDITENV(1)

NAME

       grub-editenv - edit GRUB environment block

SYNOPSIS

       grub-editenv [OPTION...] FILENAME COMMAND

DESCRIPTION

       Tool to edit environment block.

	      Commands:

       create Create a blank environment block file.

       list   List the current variables.

       set [NAME=VALUE ...]
	      Set variables.

       unset [NAME ...]
	      Delete variables.

       -?, --help
	      give this help list

       --usage
	      give a short usage message

       -v, --verbose
	      print verbose messages.

       -V, --version
	      print program version

	      Options:

       If FILENAME is `-', the default value /boot/grub/grubenv is used.

       There is no `delete' command; if you want to delete the whole environment block, use `rm /boot/grub/grubenv'.

REPORTING BUGS

       Report bugs to <bug-grub@gnu.org>.

SEE ALSO

       grub-reboot(8), grub-set-default(8)

       The full documentation for grub-editenv is maintained as a Texinfo manual.  If the info and grub-editenv programs are properly installed at
       your site, the command

	      info grub-editenv

       should give you access to the complete manual.

grub-editenv (GRUB) 2.02-2ubuntu8.3				     July 2018							   GRUB-EDITENV(1)
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