foreground

#!/bin/bash -
# foreground--Bring a named window to the foreground in a GUI, else run it
# $Id: foreground 2073 2018-12-15 21:54:21Z root $
# REQUIRES: wmctrl, gawk (\< \> word boundary patterns) or tweak for mawk

# Usage: $0 <process name>
# e.g.:  $0 roxterm


# Make sure wmctrl is executable
WMCTRL='/usr/bin/wmctrl'
[ -x "$WMCTRL" ] || {
    echo 'FATAL: '$WMCTRL' not found or not executable.  Please install it.'
    exit 1
}
# Make sure we have gawk
AWK='/usr/bin/gawk'
[ -x "$AWK" ] || {
    echo 'FATAL: '$AWK' not found or not executable.  Please install it.'
    exit 1
}

# Get argument and trivial sanity check
process="$1"
[ -n "$process" -o "$process" = '-h' -o "$process" = '--help' ] || {
    echo 'FATAL: You must provide a process name to bring to the foreground.'
    exit 2
}

if [ -f "$HOME/wmctrl.$process" ]; then
    # We have an override file for some reason, use that
    # Create the file by finding the code in the first column of: /usr/bin/wmctrl -lp | grep 'jp@weber6'
    # Then something like: echo '0x03400007' > ~/wmctrl.roxterm
    echo "Using '$HOME/wmctrl.$process' override file!"
    $WMCTRL -ia "$(< "$HOME/wmctrl.$process")"
else
    # Get the *first* PID we see for the process.
    # If you have more than one, too bad...
    pid=$(pgrep --newest --full --uid=$USER "^$process")

    # If we have a PID for the process
    if [ "$pid" ]; then
        # Activate it (bring to foreground)
        $WMCTRL -ia "$($WMCTRL -lp | $AWK "/\<$pid\>/ {print \$1}")"
        # Note awk \< \> are "word boundary" anchors
    else
        # No PID, so fire up a new process
        nohup "$process" &
    fi
fi