nginx-cache-purge.sh.example
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nginx-cache-purge.sh.example
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	#!/bin/sh

	# A simple shell script to delete a media from the Nginx cache.

	SCRIPTNAME=${0##*/}

	# NGINX cache directory
	CACHE_DIRECTORY="/tmp/pleroma-media-cache"

	## Return the files where the items are cached.
	## $1 - the filename, can be a pattern .
	## $2 - the cache directory.
	## $3 - (optional) the number of parallel processes to run for grep.
	get_cache_files() {
	local max_parallel=${3-16}
	find $2 -maxdepth 2 -type d \| xargs -P $max_parallel -n 1 grep -E -Rl "^KEY:.*$1" \| sort -u
	}

	## Removes an item from the given cache zone.
	## $1 - the filename, can be a pattern .
	## $2 - the cache directory.
	purge_item() {
	for f in $(get_cache_files $1 $2); do
	echo "found file: $f"
	[ -f $f ] \|\| continue
	echo "Deleting $f from $2."
	rm $f
	done
	} # purge_item

	purge() {
	for url in "$@"
	do
	echo "$SCRIPTNAME delete \`$url\` from cache ($CACHE_DIRECTORY)"
	purge_item $url $CACHE_DIRECTORY
	done

	}

	purge $@