Bash Script, CD Into A Directory With A Dynamic Name

To pull the effective uid use this command:

id -u

If the result is ‘0’ then the script is either running as root, or using sudo. You can run the check by doing something like:

if [[ $(/usr/bin/id -u) -ne 0 ]]; then
    echo "Not running as root"
    exit
fi

Sounds like you just need to remove the carriage return when processing each line. The real easy way is to use the dos2unix utility, but if your system doesn't have that or you can't get it, you can accomplish similar things with tr, e.g:

echo $PATH | tr -d '\r'

More ideas, such as using sed, are available on the Wikipedia entry.

EDIT: I should point out that $PATH is not a great variable name, since it is undoubtedly set by the environment and other programs may depend on its value. You should consider changing it to something like $CUR_PATH.