adduser.sh

来自「Solaris环境下Shell编程编程」· Shell 代码 · 共 93 行

#!/bin/sh

# Purpose: To write a script to add user to the system.
# Name: adduser.sh


# Check for only a single command line argument
if [ $# -ne 1 ]
then
        echo "Usage: adduser newusername"
        exit 1
fi


# Assign the value of $1 to the variable name
name=$1

if grep "^$name:" ./mypasswd > /dev/null 2>&1
then
        echo "The username $1 is already in use, here "
        echo "is the entry from the ,/mypasswd file."
        echo
        grep "^$name:" ./mypasswd
        exit 2
fi



# Use nawk to extract all the UIDs into the temp file currentuid
nawk -F: '{print $3}' ./mypasswd > ./currentuid

# Use sed to remove all 1, 2, and 3 digit UIDs from currentuid, and
# place the output in the temp file currentuid2
sed -e '/^.$/d' -e '/^..$/d' -e '/^...$/d'  ./currentuid > ./currentuid2


# Use sed to remove UIDs 60001, 60002, and 65534 from currentuid2,
# and place the output in the temp file currentuid3
sed -e '/^6000[12]$/d' -e '/^65534$/d'  ./currentuid2 > ./currentuid3



# Sort the UIDs in currentuid3 numerically
sort -n ./currentuid3 > ./currentuid4

# Calculate the next available UID
lastuid=`sed -n '$p' ./currentuid4`

uid=`expr $lastuid + 1`
echo "The uid for $name is: $uid"



# Prompt for a group name and verify whether it exists in /etc/group

echo "What primary group should $a belong to? "
echo "Please specify the group name: \c"
read group junk


grep "^$group:" /etc/group > /dev/null  2>&1
if  [ $? -ne 0 ]
then
        echo "The group $group is not valid."
        echo
        exit 2
fi

echo "Good, now select a login shell for user $1"
cat << LOGINSHELLS
> csh
> ksh
> sh
LOGINSHELLS

read ushell

if [ $ushell = "csh" -o  $ushell = "ksh" -o $ushell = "sh" ] 
then
        echo "Please enter the comment information for the user:"
        read comment

        echo "The new user entry looks like this:"
        echo "$1:x:$uid:$group:$comment:/export/home/$1:$ushell"
        echo " "
        echo "New user $1 has been added to the ./mypasswd file"
        echo "$1:x:$uid:$group:$comment:/export/home/$1:$ushell" >> ./mypasswd
else 
       echo "Sorry, that is not a valid shell, exiting..."
       exit 3
fi