how to change user password in ubuntu using xargs

Question

I need to change the password of "vtm" user to "abcd12345" by using xargs command.

so I wrote this comman

printf "vtm abcd12345 abcd12345" | xargs -t -n1 passwd

but I couldn't change it.

Answer 1

You could use chpasswd command to change password instead.

# 1. find the user id of `vtm`
> sudo grep "vtm" /etc/passwd.

# 2. change password with `chpasswd`
echo 'userid:abcd12345' | chpasswd

Or if you want to change password with echo:

echo -e -n "abcd12345\nabcd12345" | passwd vtm