Downloads clion to /tmp and extracts it. Can be used to circumwent tight disk quotas in home-dirs

clionrunner.sh

#!/bin/bash
SCRIPTDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd )"
WORKDIR="$SCRIPTDIR/files"
TARURL="https://download.jetbrains.com/cpp/clion-1.2.tar.gz"
HASHURL="${TARURL}.sha256"
TARPATH="$WORKDIR/clion.tar.gz"
EXTRACTDIR="$WORKDIR"

if [ ! -d "$WORKDIR" ]; then
    rm "$WORKDIR"
    ln -s "$(mktemp --suffix .cliondl -d)" "$WORKDIR"
    echo Created new temporary directory symlink $WORKDIR
fi

DESIREDHASH=$(wget -q "$HASHURL" -O - | awk '{ print $1 }')
ACTUALHASH=$(sha256sum "$TARPATH" | awk '{ print $1 }')

# Assuming that an existing tar with the right hash means an extracted tar
if [ ! -f "$TARPATH" -o "$DESIREDHASH" != "$ACTUALHASH" ]; then
    echo Did not find existing file, downloading...
    wget -nv "$TARURL" -O "$TARPATH"
    echo Extracting $TARPATH to $EXTRACTDIR
    tar xzf "$TARPATH" --directory="$EXTRACTDIR" || (rm -rf "$EXTRACDIR"; rm -r "$TARPATH")
fi

$EXTRACTDIR/clion*/bin/clion.sh