Resize photo to smaller scale for to upload to my wiki

wikiphoto.sh

#!/bin/bash

extname=".jpg"
def_size_wid=1024


new_wid=0

[[ "$#" -lt "1" ]] && exit 0
filename="$1"

[[ ! -f "$filename" ]] && {
	echo "File not found or not a regular file."
	exit
}

function set_file_wid {
	wid=`exiv2 "$filename" |
		sed -n -e '/^Image size/p' |
		sed -e 's/.*:\s//' -e 's/\sx.*$//'`
	hei=`exiv2 "$filename" |
		sed -n -e '/^Image size/p' |
		sed -e 's/.*:\s//' -e 's/^.*x\s//'`


	if [[ "$wid" -gt "$hei" ]]; then
		new_wid=$def_size_wid	
	else
		new_wid=`echo $wid / \($hei / $def_size_wid\) |
			bc -l |
			sed 's/\..*$//'`
	fi
}

set_file_wid

basename=`basename "$1" $extname`
oldname="$1"
newname="${basename}.wiki${extname}"
pwd
convert -resize $new_wid "$oldname" "$newname" # 2>/dev/null

if [[ "$?" == "0" ]]; then
	echo "Done. Successfully generated $newname."
	exit 0
else
	echo "Failed."
	exit 1
fi

exit


# Might need rename into `wikiphoto' or change the configuration to use `sync_photo'