/Shell/Bash/Bash if user exists in a group then add

Bash if user exists in a group then add

egrep -i "^groupname" /etc/group;
if [ $? -eq 0 ]; then
   echo "Group Exists"
else
   echo "Group does not exist -- Invalid Group name"
fi

Source: bytefreaks.net

Bash if user exists in a group then add

egrep -i "^useraccount:" /etc/passwd;
if [ $? -eq 0 ]; then
   echo "User Exists"
else
   echo "User does not exist -- Invalid Username"
fi

Source: bytefreaks.net

Bash if user exists in a group then add

#!/bin/bash
# init
USERID="$1"
#....
/bin/egrep  -i "^${USERID}:" /etc/passwd
if [ $? -eq 0 ]; then
   echo "User $USERID exists in /etc/passwd"
else 
   echo "User $USERID does not exists in /etc/passwd"
fi
# ....

Source: cyberciti.biz

Similar codes

47 votes185 views1 answer
Clone a specific repository
Shell/Bash
0 vote145 views1 answer
Install specific tensorflow version
Shell/Bash
11 votes193 views3 answers
Get public ipv6 linux
Shell/Bash
0 vote177 views1 answer
Ubuntu battery and network utilities install
Shell/Bash
5 votes186 views2 answers
How to install latest composer in mac
Shell/Bash
4 votes250 views3 answers
Docker daemon is not running
Shell/Bash
35 votes240 views1 answer
Npm install --global yarn
Shell/Bash
0 vote182 views2 answers
What is the use of bashrc file in linux
Shell/Bash
0 vote184 views1 answer
Dgvai/laravel-adminlte-components
Shell/Bash
6 votes192 views3 answers
Why pyaudio is not installing
Shell/Bash