Create symlinks of all files and folders from the source dir to the destination dir

lna.sh

#!/bin/bash

if [ $# -lt 1 ]
then
    echo "Create symlinks of all files and folders from the source dir to the destination dir"
    echo "Usage: `basename $0` source [dest]"
    exit 1
fi

source=$1
if [ $# -eq 2 ]
then
    dest=$2
else
    dest="."
fi
currentDir=`pwd`

if [[ ! "$source" = /* ]]   # Check if it is a relative or absolute path
then
    source="$currentDir/$source"
fi

if [[ ! "$dest" = /* ]]     # Check if it is a relative or absolute path
then
    dest="$currentDir/$dest"
fi

echo -e "Source:\t\"$source\""
echo -e "Dest:\t\"$dest\""

if [ ! -d "$source" ]
then
    echo "Source folder $source doesn't exist"
    exit 1
fi

if [ ! -d "$dest" ]
then
    echo "Destionation folder $dest doesn't exist. Creating"
    mkdir "$dest"
    if [ ! -d "$dest" ]
    then
        echo "Folder could not be created."
        exit 1
    fi
fi
echo ""

ls="gls -1" # Set ls command here
# The sed filters out the resolution of symbolic links
files=`$ls -l "$source/" | sed "s/[@]* ->.*$//" |
awk '{
    x=9;
    while(x<=NF){
        if(x==NF) printf "%s", $x;
        else printf "%s ", $x;
        x++;
    }
    printf "\n";
}'`

# Internal File Separator needs to be set to newline to parse awk results
OLDIFS=IFS
IFS=$'\n'
for file in $files
do
    # echo "$source/$file"
    if [ -e "$source/$file" ]   # Check if file really exists (invalid symbolic link, insufficient permissions)
    then
        if [ ! -e "$dest/$file" ] # Check if the same filename exists at the destination
        then
            echo "\"$source/$file\" -> \"$dest/$file\""
            ln -s "$source/$file" "$dest/$file"
        else
            echo "Skipping: \"$source/$file\". Same filename exists at dest"
        fi
    fi
done
# Restore the IFS to the original
IFS=OLDIFS