Shell Programming and Scripting

createUser() {
        for w in `cat $1`;
        do
                export user=$(printf '%s\n' "$w";)
                useradd -d $4$user -m $user -p $(perl -e 'print
crypt("password", "password")') > /dev/null

cd $4$user

old=_old

ls|wc -w

old=_old

ls|wc -w

root@bt:~# bash -vx add_user_orig userlist /filelist /files/ /
#!/bin/sh
#set -x

################### Method to Create a User ########################

createUser() {
        for w in `cat $1`;
        do
                export user=$(printf '%s\n' "$w";)
                useradd -d $4$user -m $user -p $(perl -e 'print
crypt("password", "password")') > /dev/null
                if [[ $? -ne 0 ]]; then
                        echo "User $user you are trying to add already exists."
                        echo "Exiting..."
                        exit 1;
                fi
                echo "$user added with home_directory $4$user and
default password: password"
                echo "Copying files..."
                copyFiles $1 $2 $3 $4
        done
        return 0;
}

################### Create User Ends ################################

################## Copying User Files ##############################

copyFiles() {
        cd $4$user
        old=_old
	ls|wc -w
	echo code=$?
        if [[ $? -eq 0 ]]; then
                echo "file for $4$user already exists!"
                echo "Do you want to overwrite the file (y/n):"
                read answer
                if [[ $answer -eq y || $answer -eq Y ]]; then                        
                        for i in `cat $2`
                        do
                                cp $3$i $4$user > /dev/null
                        done
                elif [[ $answer -eq n || $answer -eq N ]]; then
                        mv $4$user $4$user$old > /dev/null
                        mkdir /$4/$user > /dev/null
			for i in `cat $2`
                        do
                                cp $3$i $4$user > /dev/null
                        done
                fi
                chmod 700 $4$user /dev/null
        fi
}

################# Copying User Files Ends ###########################


################################### Main ##############################

        clear
+ clear


        # check command line arguments count
        if [[ $# -lt 4 ]] ; then
                echo "Command line arguments are need to run the script"
                echo "Usage: <Script Name>  path_to_username_list
files_list_path master_copies_path users_home_folder_path"
                echo "Exiting..."
                exit 1;
        fi
+ [[ 4 -lt 4 ]]

        # validate command line arguments
        wd=$(pwd)
pwd)
pwd
++ pwd
+ wd=/root
        if  [[ $# -ne 0 ]]; then
                ls $1 > /dev/null
                if [[ $? -ne 0 ]]; then
                        echo "Error: Path to username list doesnt
exist, Please provide correct path"
                        echo "Exiting..."
                        exit 1;
                fi
                ls $2 > /dev/null
                if [[ $? -ne 0 ]]; then
                        echo "Error: Path to file listing file names
to be copied doesnot exist"
                        echo "Exiting..."
                        exit 1;
                fi
                ls $3 > /dev/null
                if [[ $? -ne 0 ]]; then
                        echo "Error: Path to the master copies doestnot exist"
                        echo "Exiting..."
                           exit 1;
                fi
        fi
+ [[ 4 -ne 0 ]]
+ ls userlist
+ [[ 0 -ne 0 ]]
+ ls /filelist
+ [[ 0 -ne 0 ]]
+ ls /files/
+ [[ 0 -ne 0 ]]
        for i in `cat $2`
        do
                ls /$3/$i > /dev/null
                if [[ $? -ne 0 ]]; then
                        echo "file $i doesnt exist in $3"
                        echo "Exiting..."
                        exit 1;
                fi

        done
cat $2
++ cat /filelist
+ for i in '`cat $2`'
+ ls //files//file1
+ [[ 0 -ne 0 ]]
+ for i in '`cat $2`'
+ ls //files//file2
+ [[ 0 -ne 0 ]]
        cd $wd > /dev/null
+ cd /root

        # Calling user creation method
        createUser $1 $2 $3 $4
+ createUser userlist /filelist /files/ /
cat $1
++ cat userlist
+ for w in '`cat $1`'
printf '%s\n' "$w";)
printf '%s\n' "$w";
++ printf '%s\n' neha
+ export user=neha
+ user=neha
perl -e 'print
crypt("password", "password")')
perl -e 'print
crypt("password", "password")'
++ perl -e 'print
crypt("password", "password")'
+ useradd -d /neha -m neha -p papAq5PwY/QQM
+ [[ 0 -ne 0 ]]
+ echo 'neha added with home_directory /neha and
default password: password'
neha added with home_directory /neha and
default password: password
+ echo 'Copying files...'
Copying files...
+ copyFiles userlist /filelist /files/ /
+ cd /neha
+ old=_old
+ wc -w
+ ls
0
+ echo code=0
code=0
+ [[ 0 -eq 0 ]]
+ echo 'file for /neha already exists!'
file for /neha already exists!
+ echo 'Do you want to overwrite the file (y/n):'
Do you want to overwrite the file (y/n):
+ read answer
n 
+ [[ n -eq y ]]
cat $2
++ cat /filelist
+ for i in '`cat $2`'
+ cp /files/file1 /neha
+ for i in '`cat $2`'
+ cp /files/file2 /neha
+ chmod 700 /neha /dev/null
+ for w in '`cat $1`'
printf '%s\n' "$w";)
printf '%s\n' "$w";
++ printf '%s\n' jess
+ export user=jess
+ user=jess
perl -e 'print
crypt("password", "password")')
perl -e 'print
crypt("password", "password")'
++ perl -e 'print
crypt("password", "password")'
+ useradd -d /jess -m jess -p papAq5PwY/QQM
+ [[ 0 -ne 0 ]]
+ echo 'jess added with home_directory /jess and
default password: password'
jess added with home_directory /jess and
default password: password
+ echo 'Copying files...'
Copying files...
+ copyFiles userlist /filelist /files/ /
+ cd /jess
+ old=_old
+ wc -w
+ ls
0
+ echo code=0
code=0
+ [[ 0 -eq 0 ]]
+ echo 'file for /jess already exists!'
file for /jess already exists!
+ echo 'Do you want to overwrite the file (y/n):'
Do you want to overwrite the file (y/n):
+ read answer
y
+ [[ y -eq y ]]
cat $2
++ cat /filelist
+ for i in '`cat $2`'
+ cp /files/file1 /jess
+ for i in '`cat $2`'
+ cp /files/file2 /jess
+ chmod 700 /jess /dev/null
+ return 0

CNT=$(ls|wc -w)
#    echo code=$?   <---- DON'T do this - see comment below!
if [[ "$CNT" -gt "0" ]]; then   #CNT is greater than zero - files exist - ask for overwrite!
.
.
.
fi