Bash script to help manage .htpasswd files

update_htpasswd.sh

#!/bin/bash
#
# Manage .htpasswd files


# Store script name for use in output.
me=$( basename $0 )


# Utility function for exiting.
die () {
  echo -e "\n${me}: ${1}, exitting...\n" >&2
  exit 1
}


# Die immediately if not root.
[ $( id -u ) -gt 0 ] && die "You are not root, do 'sudo $0'"


# Read options.
for i in "$@"
	do
	case $i in
	    --files=*)
	    FILES="${i#*=}" # Space seperated list of .htpasswd file paths under /var/www.
	    shift # past argument=value
	    ;;
	    --name=*)
	    USERNAME="${i#*=}" # Username to set password for.
	    shift # past argument=value
	    ;;
	    --password=*)
	    PLAINTEXT_PASSWORD="${i#*=}" # Plaintext password to be hashed.
	    shift # past argument=value
	    ;;
	    *)
	            # Unknown option.
	    ;;
	esac
done


# Prompt for needed vars if missing.
[ -z "$USERNAME" ] && read -p "What username do you want to create/update: " USERNAME
[ -z "$PLAINTEXT_PASSWORD" ] && read -p "Enter the new (plain text) password: " PLAINTEXT_PASSWORD


# Limit things to the webroot.
www_dir='/var/www';
if [[ ! -d $www_dir ]]; then
	die "Error: webroot not found"
fi


# If no site(s) passed as arg, find all within webroot.
if [ -z "${FILES}" ]; then
	for htpasswd_path in $( cd $www_dir ; find . -type f -iname '.htpasswd' | sort -n ); do
		FILES="${FILES} ${htpasswd_path}"
	done
fi


# Make sure we're in the webroot.
cd $www_dir


echo -e "\n<== Starting ==>\n"


# Loop over files.
for file in ${FILES}; do

	# Pre-flight checks.
	[ -z $file ] && \
		die "Error: no .htpasswd file(s) found"
	[ -r ${file} ] || \
		die "Error: '${file}' does not exist"

	# Create / modify value for user in *existing* .htpasswd.
	echo -e "==> Processing ${file}"
	htpasswd -b ${file} "${USERNAME}" "${PLAINTEXT_PASSWORD}"

done;


echo -e "\n<== Done ==>"
exit

Add / updates a password for a single user in .htpasswd file(s).
Example usage: $ sudo ./update_htpasswd.sh --name="Bond" --password="Secret Squirrel 007"

• By default it will run against all .htpasswd files found under the configured webroot, but can also target specific files using the --files= arg.
• Requires sudo to account for varying permissions. Comment out ln 18 if not needed.