Bash script for archiving project directories. Learning bash, so this is very much a work in progress.

archive.sh

#!/bin/bash

# Archive old projects
# 
#   - Create a tar.gz file out of a folder
dir=~/Archive

# Echo a message. TODO - Colors.
function msg() {
  echo "> $*" >&2
}

# Prompt.
#
# $1 - The variable to save the prompt to.
# $2 - The message to prompt with.
function prompt() {
  echo -n "$2"
  read -e $1
}

# Echo an error. TODO - Colors.
function error() {
  msg $1
  exit 1
}

# Check if the archive exists.
if [[ ! -d $dir ]]; then
  mkdir $dir;
  msg "Created the $dir directory.";
fi

prompt archivesource "Which directory do you want to archive?: "
archivesource=${archivesource%/} # Strip any trailing slashes.

# Check if the source directory exists.
if [[ ! -d $archivesource ]]; then
  error "The $archivesource directory does not exist!"
fi

# Prompt for an archive name, default to the source directory name.
prompt archivename "Name? [$archivesource]: "
if [[ -z $archivename ]]; then archivename=$archivesource; fi
archivename=${archivename%/} # Strip any trailing slashes.

# Archive the directory and move it to the archive.
function archiveSource() {
  msg "Workin..."
  tar -pczf $archivename.tar.gz $archivesource
  msg "Created the $archivename.tar.gz archive!"
  mv $archivename.tar.gz $dir
  msg "Moved $archivename.tar.gz to $dir!"
  removeSource
}

# Remove the archive source directory.
function removeSource() {
  prompt remove "Do you want to remove the $archivesource directory? [yes]: ";
  
  if [[ $remove == '' ]]; then
    remove='yes';
  fi
  
  if [[ $remove == 'yes' ]]; then
    msg "Workin...";
    rm -rf $archivesource;
    msg "Removed the $archivesource directory!";
  fi
}

# Check if the archive already exists.
if [[ -e $dir'/'$archivename'.tar.gz' ]]; then
  prompt overwrite "This archive already exists. Do you want to overwrite it? [yes]: "
  
  if [[ $overwrite == "" ]]; then
    overwrite="yes";
  fi
  
  if [[ $overwrite == "yes" ]]; then
    msg "Overwriting $dir/$archivename.tar.gz..."
    archiveSource
  else
    error "Stopping. TODO - should prompt for a new name."
  fi
else
  archiveSource
fi

msg "Done!"