Interactive Linux Shell Script To Create New Linux User
Script helps to remember all main points during creating user and quickly create new user. If admin need to create 100 users at once this script could be helpful. Script use command useradd with keys and groupadd.
Shell Script
#!/bin/bash
while [ x$username = "x" ]; do
read -p "Please enter the username you wish to create : " username
if id -u $username >/dev/null 2>&1; then
echo "User already exists"
username=""
fi
done
while [ x$group = "x" ]; do
read -p "Please enter the primary group. If group not exist, it will be created : " group
if id -g $group >/dev/null 2>&1; then
echo "Group exist"
else
groupadd $group
fi
done
read -p "Please enter bash [/bin/bash] : " bash
if [ x"$bash" = "x" ]; then
bash="/bin/bash"
fi
read -p "Please enter homedir [/home/$username] : " homedir
if [ x"$homedir" = "x" ]; then
homedir="/home/$username"
fi
read -p "Please confirm [y/n]" confirm
if [ "$confirm" = "y" ]; then
useradd -g $group -s $bash -d $homedir -m $username
fi
Sample Result
sudo ./linux_user.sh
Please enter the username you wish to create : test
Please enter the primary group. If group not exist, it will be created : test
Please enter bash [/bin/bash] :
Please enter homedir [/home/test] :
Please confirm [y/n]y
22:12:58 [test@Desktop] :~ id test
uid=1003(test) gid=1003(test) groups=1003(test)
Learn Above Script Line by Line
#Write to console ask to enter group and save input to group variable
read -p "Please enter the primary group. If group not exist, it will be created : " group
#check if group already exist
if id -g $group >/dev/null 2>&1; then
#just warn that group already exist
echo "Group exist"
else
#if group not exist – create one more
groupadd $group
fi
#end of while loop
done
#ask to enter preferred bash
read -p "Please enter bash [/bin/bash] : " bash
#check if no input
if [ x"$bash" = "x" ]; then
#if no input, use default bash
bash="/bin/bash"
fi
#ask to enter preferred homedir
read -p "Please enter homedir [/home/$username] : " homedir
#check if no input
if [ x"$homedir" = "x" ]; then
#if no input , use default homedir
homedir="/home/$username"
fi
#ask to confirm all inputs
read -p "Please confirm [y/n]" confirm
#if input y
if [ "$confirm" = "y" ]; then
#command to add user with all entered info
useradd -g $group -s $bash -d $homedir -m $username
fi
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Filed Under : SHELL SCRIPTS
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how about a script that does this on solaris 8,9,10,11 and across multiple servers?
We will include solaris section soon, so we could include it there..