gensum, speed up checksum process!

[Nhoya]

Code Select Expand


#!/bin/bash
#
# Copyright (C) 2015 sten_gun, Nhoya.
#
# gensum 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 3 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, see <http://www.gnu.org/licenses/>
TMPDIR=/tmp/genchecksum
version="1.0 (3/13/15)"
checksum() {
if test -v MD5 ; then
echo "md5: $(md5sum $1 )"
fi
if test -v SHA ; then
if [ "$SHA" == "all" ] || [ "$SHA" == "1" ]; then
echo "sha1: $(sha1sum $1)"
fi
if [ "$SHA" == "all" ] || [ "$SHA" == "256" ]; then
echo "sha256: $(sha256sum $1)"
fi
fi
echo ""
}
ask_del() {
echo "Delete extracted files? ($TMPDIR) [y/n]"
read input
case $input in
""| [Yy]) rm -rf $TMPDIR
echo -e "\e[31mFiles deleted\e[0m"
;;
*) echo -e "\e[31mWarning: temporary files saved in $TMPDIR\e[0m"
;;
esac
}
checksum_cascade() {
if (file $1 |awk -F . '{print$NF}' |grep 'zip\|rar\|7z\|tar\|gz\|bz'); then
archive $1
elif [[ -d $1 ]]; then
for file in "$1/*"; do
checksum_cascade $file
done
else
checksum $1
fi
}
archive() {
if (file $1 |awk -F . '{print$NF}' |grep 'zip\|rar\|7z\|tar\|gz\|bz')
then
mkdir $TMPDIR
unar -o $TMPDIR $1
checksum $1 2>/dev/null
checksum_cascade $TMPDIR
ask_del 2>/dev/null
fi
}
help() {
echo "gensum 1.0 (3/13/2015), generate checksum of your files"
echo "Copyright(C) 2015 sten_gun, Nhoya"
echo ""
echo "Usage: gensum [options] files"
echo ""
echo "Available Options:"
echo "-m Uses MD5 checksum."
echo "-s [1|256|all] Uses SHA1|SHA256 or both checksums."
echo "-d <directory> Calculate checksum for each file in a directory"
echo "-z <archive> Calculate checksum for archive and each file in it"
echo "-v Display version"
echo "-h Display this page"
}
#---------------------------------------------------- Script Start
while getopts ":as:mhv" opt; do
case "$opt" in
h) help
exit 0
;;
s) SHA="$OPTARG"
;;
m) MD5=1
;;
:) echo "-$OPTARG need param: 256 / 1 / all"
;;
v) echo $version
exit 0
;;
esac
done
if ! [ -v SHA ] && ! [ -v MD5 ]; then
SHA="all"
MD5=1
fi
OPTIND=1
while getopts ":z:d:as:mhv" opt; do
case "$opt" in
z) echo "Checking archive $OPTARG"
archive $OPTARG
;;
d) echo "Checking directory $OPTARG"
checksum_cascade $OPTARG
;;
\?) echo "invalid option(s): -$OPTARG"
exit 1
;;
:) echo "-$OPTARG needs argument(s)"
exit 1
;;
esac
done
echo "Checking given files"
for file in ${@:$OPTIND}; do
if [ -e $file ]; then
checksum $file
else
echo "$file: file doesn't exist"
fi
done
exit 0


1.4 is in develop branch, fixed issue with spaced file names

N.B. check the repo for the last version, this is only the unstable 1.0

https://github.com/Nhoya/gensum

[Nhoya]

1.3 is out, please check the repo :)

[ZEROF]

Thanks for update and you don't need to upgrade your 2nd topic in "Tool request" every time.

Cheers!

[Nhoya]

ok thanks you so much :)