compress

#!/bin/bash
#------------------------------------------------------------------------------#
#Title           :compress
#Author          :Ivan Batistic
#Date            :01/2023
#Version         :0.1
#Bash_version    :5.1.16(1)-release
#Description     :
#Note            :checked with ShellCheck
#------------------------------------------------------------------------------#


if [[ ( $# -eq 0 ) || ( $1 == "--help" ) || ( $1 == "-h" ) ]] ; then
    echo "Configured tar function to compress files" 
    echo "       " 
    echo "Options used: -czvf"
    echo "       "
    echo "Mandatory arguments: fileName" 
    echo "     "
    echo "Example:"
    echo "tar -czvf fileName.tar.gz fileName"

    exit 1
fi

if [[ $# -ne 1 ]]; then
    echo "1 argument required, $# provided" >&2
    return 1;
fi

lastChar=${1: -1}
t=""

if [[ "$lastChar" == "/" ]];
then
    t=${1::-1}."tar.gz"
else
    t=$1."tar.gz"
fi

echo "Compressing folder $1 into $t"
echo
tar -czvf "$t" "$1"

# Compressing using 16 cores
# tar cf - *.csv | pigz -p 16 -c > resuls.tar.gz

b_c=$(du -sh "$1" | awk '{print $1}')
a_c=$(du -h "$t" | awk '{print $1}')

echo
echo "Compression ratio: $b_c -> $a_c"

#------------------------------------------------------------------------------#