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# usage: VAR=$(trim " string ")
trim() {
local var=$1
var="${var#"${var%%[![:space:]]*}"}" # remove leading whitespace characters
var="${var%"${var##*[![:space:]]}"}" # remove trailing whitespace characters
echo -n "$var"
}
# usage: CANONICALIZED_STRING=$(canonalize <path>)
# usage with relative path requires you to be in the correct directory.
canonicalize() {
cd -P -- "$(dirname -- "$1")" && printf '%s\n' "$(pwd -P)/$(basename -- "$1")"
}
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