Compress all DEM TIFF files in a directory in place

compress_tiff_files.sh

#!/bin/bash
set -o errexit
set -o pipefail
set -o nounset

function compress_inplace() {
    local filename="$1"
    gdal_translate -co compress=lzw "$filename" "$filename.compressed"
    rm "$filename"
    mv "$filename.compressed" "$f"
}

function compress_files() {
    local source_dir="$1"
	for f in $source_dir/*.tif; do
        compress_inplace "$f"
	done
}

compress_files "$1"