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Full Discussion: Grouping and counting
Top Forums Shell Programming and Scripting Grouping and counting Post 302979473 by jim mcnamara on Monday 15th of August 2016 08:24:52 AM
Old 08-15-2016
Try awk:
Code:
awk -F '|' {arr[$(NF)]++} END {for(i in arr) {i, arr[i]}} ' inputfile

Data will not come out sorted, you can pipe the result into sort if you need it that way.
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groups(1)						      General Commands Manual							 groups(1)

NAME
groups - Displays your group membership SYNOPSIS
groups [user] DESCRIPTION
The groups command writes to standard output the groups to which you or the specified user belong. The Tru64 UNIX operating system allows a user to belong to many different groups at the same time. Your primary group is specified in the /etc/passwd file. Once you are logged in, you can change your active group with the newgrp shell command (see sh). When you create a file, its group ID is that of your active group. Other groups that you belong to are specified in the /etc/group file. If you belong to more than one group, you can access files belonging to any of those groups without changing your primary group ID. These are called your concurrent groups. NOTES
The /etc/passwd and /etc/group files must be on the same node. EXAMPLES
To determine your group membership, enter: groups The groups to which you belong will be displayed. For example: devel prod FILES
Contains group information. Contains user information. SEE ALSO
Commands: csh(1), ksh(1), sh(1) Functions: initgroups(3), setgroups(2) groups(1)
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