aurup.sh

#!/bin/bash
#
# aurup
# Simple updater for the Arch Users Repository (AUR)
# https://aur.archlinux.org
# Note: This probably won't work right on your machine unmodified.
# It is just my personal project.
#
source $HOME/.auruprc

echo ""
echo "Authorise Sudo:"
sudo echo "Thanks."
echo ""

# Error in case that files doesn't exist.
if [[ -z $aurDir ]]; then
    echo "Create an ~/.auruprc file with"
    echo 'aurDir="/path/to/your/aur/directory"'
    echo "No trailing slash."
    exit
fi

## For loop looks in every directory within the aur directory.
echo "Updating repositories:"
for aurPkg in $aurDir/* ; do
    # Exclude files in the aur directory.
    if [[ ! -d $aurPkg ]]; then
        continue
    # Exclude directories that are not git repos.
    elif [[ ! -d $aurPkg/.git ]]; then
        continue
    fi
    
    # Enter the directory.
    pushd "$aurPkg" >/dev/null 2<&1
    
    # Extract the last bit of the path to get just the project name.
    aurName="$(echo "$aurPkg" | awk -F \/ '{ print $NF }')"

    # Output for whoever is watching.
    echo -ne "==> $aurName\033[0K\r"

    # Update from remote
    git remote update >/dev/null 2<&1
    # Compare local and remote
    gitLocal=$(git rev-parse @)
    gitRemote=$(git rev-parse @{u})
    # If an update is not needed, continue. 
    # Otherwise, add the name to the list of repos that need an update.
    if [ $gitLocal = $gitRemote ] ; then
        continue
    else
        if [[ -z "$gitUpdate" ]]; then
            aurPath=($aurPkg)
            gitUpdate=($aurName)
            gitCount=1
        else
            aurPath+=($aurPkg)
            gitUpdate+=($aurName)
            gitCount=$[gitCount+1]
        fi
    fi
    popd >/dev/null 2<&1
done

# Check if there are any packages that need to be updated.
if [[ $gitCount ]]; then
    # Display packages requiring updates and then check if Pacman is running.
    echo "==> Found $gitCount Package Update(s)"
    echo "${gitUpdate[@]}"

    # If Pacman is already running, display number of updates required and exit
    if [[ -e /var/lib/pacman/db.lck ]]; then
        echo "ERROR: Pacman is currently running!"
        echo "Re-run Aurup once Pacman has completed."
        exit
    else
    # If Pacman isn't running, display packages to update and proceed to the update process
        echo "==> Upgrading $gitCount Package(s)"
        echo "${gitUpdate[@]}"
    fi
# If no packages need updating, display message and exit.
else
    echo "==> All AUR packages up-to-date!"
    exit
fi

for aurUpdating in ${aurPath[@]}; do
    ## Enter directory
    pushd "$aurUpdating" >/dev/null 2<&1
    ## Clean any previous build files
    oldStuff=(pkg src *.tar.xz *.rpm)
    git clean -df >/dev/null 2<&1
    ## Pull!
    git pull >/dev/null 2<&1
    ## Install!
    echo "Authorise Sudo:"
    sudo echo "Thanks."
    makepkg -si --noconfirm    
    ## Run post-install script if present
    if [[ -e .aurconfig ]] ; then
        sh .aurconfig
    fi
    popd >/dev/null 2<&1
done