A Sublime Text 2 update script for Linux.

subl-upd

#!/bin/sh

file="Sublime Text 2 Build ${1} x64.tar.bz2"
# Uncomment line below for 32 bit.
#file="Sublime Text 2 Build ${1}.tar.bz2"
url="http://www.sublimetext.com/${file}"
first=0

if [ $(id -u) -ne 0 ]
    then
        echo 'ERROR: You need to run this script with sudo or as root.'
        exit
fi

if [ -z $1 ]
    then
        echo 'ERROR: Invalid command. Type "subl-upd help" for a list of commands.'
        exit
fi

echo $1 | grep -q "^[0-9]*$"

if [ $? -ne 0 ] && [ $1 != 'remove' ] && [ $1 != 'clean' ] && [ $1 != 'help' ]
    then
        echo 'ERROR: Invalid command. Type "subl-upd help" for a list of commands.'
        exit
fi

if [ $1 == 'remove' ]
    then
        if [ ! -d /opt/subl ]
            then
                echo 'There is nothing to remove.'
            else
                rm -Rf /opt/subl/
                rm /usr/local/bin/subl
                echo 'Sublime successfully removed.'
        fi
        
        exit
elif [ $1 == 'clean' ]
    then
        echo 'Removing archives...'
        
        rm -Rf /opt/subl/src/
        mkdir /opt/subl/src/
        
        echo 'Archives successfully removed.'
        
        exit
elif [ $1 == 'help' ]
    then
        echo -e 'List of commands:\n  <ver#> - Update to the supplied version.\n     example -> subl-upd 2053\n  clean  - Removes all downloaded archives.\n  remove - Removes Sublime completely.\n  help   - This output.'
        exit
    else
        echo 'Starting update...'
fi

if [ ! -d /opt/subl ]
    then
        mkdir -p /opt/subl/src/
        first=1
fi

if [ ! -f "/opt/subl/src/${file}" ]
    then
        echo 'Downloading...'
        wget -P /opt/subl/src/ --accept "${file}" -q "${url}"
    else
        echo 'File already downloaded.'
fi

if [ $? -ne 0 ]
    then
        echo 'ERROR: Version not found.'
        exit
fi

if [ $first -eq 1 ]
    then
        mkdir /opt/subl/pkg/
    else
        rm -Rf /opt/subl/pkg/
        mkdir /opt/subl/pkg/
fi

echo 'Extracting...'

tar --strip-components=1 -C '/opt/subl/pkg/' -xjf "/opt/subl/src/${file}"

if [ ! -e /usr/local/bin/subl ]
    then
        echo 'Installing binary at /usr/local/bin/subl...'
        ln -s /opt/subl/pkg/sublime_text /usr/local/bin/subl
fi

echo "Update to version ${1} successful!"