cacheme

#!/bin/bash

# Usage: cacheme command
# E.g. cacheme find -name "opt"
# For cleaning all records, use: cacheme --clean
# Reference: https://stackoverflow.com/questions/11900239/can-i-cache-the-output-of-a-command-on-linux-from-cli

if [ "$1" = "--clean" ]
    then
        echo "Cleaning all cache records..."
        rm -rf /tmp/command_cache*
        echo "Cache cleaned successfully!"
        exit
fi

KEY="$*"

function append_file_last_modified_date_to_key() {
    for arg in "$@"
    do
        if [ -f "$arg" ]
        then
            KEY+=$(date -r "$arg" +\ %s)
        fi
    done
}

append_file_last_modified_date_to_key "$@"

# Use the hash as a name for temporary file
FILE="/tmp/command_cache.$(echo -n "$KEY" | md5sum | cut -c -10)"

# Use cached file or execute the command and cache it
if [ -f "$FILE" ]
then
  cat "$FILE"
else
  "$@" | tee "$FILE"
fi