Git clone only an specific directory

README.md

Usage

git_clone_only_dir -g <GIT_REPO> -d [-s <CLONE_DIR>] [-h] -- clone a specific git repository directory

where:
-g git repository
-d directory to clone
-s directory to place the clone (default will be a random one)
-h show this help text

git_clone_only_dir.sh

#!/usr/bin/env bash
usage="$(basename "$0") -g <GIT_REPO> -d <DIRECTORY> [-s <CLONE_DIR>] [-h] -- clone a specific git repository directory

where:
    -g  git repository
    -d  directory to clone
    -s  directory to place the clone (default will be a random one)
    -h  show this help text
"
sflag=false
gflag=false
dflag=false
while getopts ':g:d:s:h' option; do
  case "$option" in
    h) echo "$usage"
       exit
       ;;
    g) GIT_REPO=$OPTARG
       gflag=true
       ;;
    d) DIRECTORY=$OPTARG
       dflag=true
       ;;
    s) CLONE_DIR=$OPTARG
       sflag=true
       ;;
    :) printf "missing argument for -%s\n" "$OPTARG" >&2; echo "$usage" >&2; exit 1;;
    \?) printf "illegal option: -%s\n" "$OPTARG" >&2; echo "$usage" >&2; exit 1;;
    *) echo "Unimplemented option: -$OPTARG" >&2; echo "$usage" >&2; exit 1;;
  esac
done
shift $((OPTIND - 1))

if ! $gflag
then
    printf "missing argument -g\n" >&2; echo "$usage" >&2; exit 1;
fi

if ! $dflag
then
    printf "missing argument -d\n" >&2; echo "$usage" >&2; exit 1;
fi

if $sflag
then
  mkdir -p $CLONE_DIR
else
  CLONE_DIR=$(mktemp -d XXXXXXXXX)
fi

cd $CLONE_DIR && \
git init && \
git config core.sparsecheckout true && \
echo $DIRECTORY >> .git/info/sparse-checkout && \
git remote add -f origin $GIT_REPO && \
git pull origin master && \
echo "Directory $DIRECTORY is now clonned
To check it call:

  cd $CLONE_DIR/$DIRECTORY && ls

"