Process log file into ordered and counted list of entries

log_process.sh

# Remove the leading 38 characters (`[05-Jun-2025 02:02:18 Europe/Berlin] `)
cat /var/log/php/php-fpm-web.log | cut -b 38- > php_1.log

# Remove the realpath web root portion which changes with each deployment
cat php_1.log | sed 's|/var/www/deployed/releases/[0-9]*||' > php_2.log

# sort first, so uniq reduces all eqal subsequent lines to one, add a counter for each reduced line and sort by the counter
cat php_2.log | sort | uniq -c | sort -bgr > php_3.log

# show the list of errors, ordered by number of times logged
less php_3.log