Arch Linux bashrc alias

bash.bashrc

#
# /etc/bash.bashrc
#

# ......

# Custom functions
function expac-diff-file {
    if [[ "$1" == "" ]];
    then
        echo "Example usage: qkkdiff-file /etc/pacman.conf"
    elif [[ -f "$1" ]];
    then
        pkg="$(pacman -Qo $1 | awk '//{printf "%s-%s", $(NF-1), $NF;}')"
        bsdtar -xOf /var/cache/pacman/pkg/${pkg}-$(uname -m).pkg.tar.xz "${1/\//}" | diff - "$1"
        return 0
    else
        echo -e "The provided file \e[0;31m${1}\e[0m does not exist."
        return 1
    fi
}

function expac-diff-pkg {
    if [[ "$1" == "" ]];
    then
        echo "Example usage:\nqkkdiff pacman"
    elif ! pacman -Q "$1";
    then
        return 1
    else
        # Example usage: qkkdiff pacman
        ver=$(pacman -Q "$1" | cut -f2 -d' ')
        pacman -Qkkq "$1" | while read package file; do echo $file; bsdtar -xOf /var/cache/pacman/pkg/${package}-${ver}-$(uname -m).pkg.tar.xz ${file/\//} | diff - $file  ; done
        return 0
    fi
}

function expac-diff-all {
    expac --timefmt='%Y-%m-%d %T' '%l\t%n' | sort | cut -f2 | while read -r pkg;
    do
      expac-diff-pkg "$pkg"
    done
}

function expac-date {
    expac --timefmt='%Y-%m-%d %T' '%l\t%n' | sort
}

function expac-size {
    expac -H M "%011m\t%-20n\t%10d" $(comm -23 <(pacman -Qqen | sort) <({ pacman -Qqg base-devel; expac -l '\n' '%E' base; } | sort | uniq)) | sort -n
}

function compact {
    echo 3 > /proc/sys/vm/drop_caches
    echo 1 > /proc/sys/vm/compact_memory
}