How to trim whitespace from a Bash variable?

Question

I have a shell script with this code:

var=`hg st -R \"$path\"`
if [ -n \"$var\" ]; then
    echo $var
fi

But the conditional code always ex

Answer 1

You can delete newlines with tr:

var=`hg st -R "$path" | tr -d '\n'`
if [ -n $var ]; then
    echo $var
done