license_adder.sh

#!/usr/bin/env bash
# Small helper script to add License header to shell scripts
# Cloudlabs, INC. Copyright (C) 2015
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Cloudlabs, INC. - 653 Harrison St, San Francisco, CA 94107.
# http://www.terminal.com - help@terminal.com

#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Cloudlabs, INC. - 653 Harrison St, San Francisco, CA 94107.
# http://www.terminal.com - help@terminal.com


HEADER=$1
TARGET=$2

TSIZE="$(wc -l $TARGET | awk '{print $1}')"
QSIZE="$(( $TSIZE - 2 ))"

tail "-$QSIZE" "$TARGET" > "$TARGET.tail"
head -2 "$TARGET" > "$TARGET.head"
cat "$TARGET.head" "$HEADER" "$TARGET.tail" > "$TARGET"
rm "$TARGET.head" "$TARGET.tail"