X-Tool - A super small but handy tool to call frequently used shell commands...

xtool.sh

#
# Made with all the love in the world
# by scireum in Remshalden, Germany
#
# Copyright by scireum GmbH
# http://www.scireum.de - info@scireum.de
# written by Andreas Haufler (aha@scireum.de)
# Licensed under the MIT license: http://opensource.org/licenses/MIT
#
# X-TOOL provides a very simple tool for invoking frequent commands.
# Those commands can be defined by setting X_OPTIONS e.g. in .bashrc:
# export X_OPTIONS=("htop" "cd" "ifconfig")
# . ~/xtool.sh <- Change this path to where ever you store the 
#                 xtool.sh file
#
# If an option starts with ? the user has to acknoledge the command 
# before its execution (everything after the ?). This can be useful
# for commands like 'service restart xxx'

echo "scireum X-Tool is available by calling 'x' :-)"

if [ -z "$X_OPTIONS" ]; then
        echo "Set X_OPTIONS to define choices..."
fi

x() {
        PS3="Please choose: "
        if [ -z "$X_OPTIONS" ]; then
                X_OPTIONS=("htop" "cd /var/log" "cd")
        fi
        select opt in "${X_OPTIONS[@]}"
        do
                if [ ${opt:0:1} = "?" ]; then
                        read -r -p "Are you sure? [y/N] " response
                        case $response in
                            [yY][eE][sS]|[yY])
                                opt=${opt:1}
                                ;;
                            *)
                                opt=""
                                ;;
                        esac
                fi
                eval $opt
                break
        done
}