How to find out what group a given user has?

Alex_5885 0
Viewed 312617

In Unix/Linux, how do you find out what group a given user is in via command line?

sysadmin unix linux command-line
5 Answers
groups

or

groups user
user_435820

This one shows the user's uid as well as all the groups (with their gids) they belong to

id userid
Paul_Tomblin_33330

or just study /etc/groups (ok this does probably not work if it uses pam with ldap)

user_442320

Below is the script which is integrated into ansible and generating dashboard in CSV format.

sh collection.sh

#!/bin/bash

HOSTNAME=`hostname -s`

for i in `cat /etc/passwd| grep -vE "nologin|shutd|hal|sync|root|false"|awk -F':' '{print$1}' | sed 's/[[:space:]]/,/g'`; do groups $i; done|sed s/\:/\,/g|tr -d ' '|sed -e "s/^/$HOSTNAME,/"> /tmp/"$HOSTNAME"_inventory.txt

sudo cat /etc/sudoers| grep -v "^#"|awk '{print $1}'|grep -v Defaults|sed '/^$/d;s/[[:blank:]]//g'>/tmp/"$HOSTNAME"_sudo.txt

paste -d , /tmp/"$HOSTNAME"_inventory.txt /tmp/"$HOSTNAME"_sudo.txt|sed 's/,[[:blank:]]*$//g' >/tmp/"$HOSTNAME"_inventory_users.txt

My output stored in below text files.

cat /tmp/ANSIBLENODE_sudo.txt
cat /tmp/ANSIBLENODE_inventory.txt
cat /tmp/ANSIBLENODE_inventory_users.txt
user_128868370
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