how to check how many user

daud795 · 07-08-2012, 02:34 AM

i want to know through which command i can check how many users i have created so far

rosehosting.com · 07-08-2012, 03:53 AM

If we assume that all users have their home directories in /home

Code:

grep '/home' /etc/passwd -c

Quote:

Originally Posted by daud795

i want to know through which command i can check how many users i have created so far

one_with_linux · 07-08-2012, 12:23 PM

this shell script might work...

Code:

#!/bin/bash
id=1000
numuser=0;
while :
do
check=`cat /etc/passwd | grep $id`
if [[ -z "$check" ]]
then 
echo -n "there are "
echo -n $numuser
echo " users"
break
else
((id++))
((numuser++))
fi
done

i just wrote this and it has only been tested on my system so it might not work....
also you might try

Code:

grep -c "" count `awk -F: '$6 ~ /\/home/ && $3 >= 500 {print $1}' /etc/passwd > count`

but that will leave a count file behind

Code:

rm count

chrism01 · 07-08-2012, 06:01 PM

More generically, just

Code:

cat /etc/passwd

The thing that post#3 is hinting at is that some distros start non-root accts at uid 500, some at 1000, hence if you don't know which, I'd go with post#2 (assuming /home) or just use mine to start with .. find out what the data looks like before you start using short cuts.
Its not a large file unless you've got eg >100 users.

ceh383 · 07-08-2012, 06:10 PM

if all you want to know is user accounts....presuming all users directories are in /home...then...

Code:

ls -l /home