#!/usr/bin/env bash
#
#
# export variable name and set value
export varname=value

# list files from older to newer
ls - rtl

# search for file or folder within Linux OS, case insensitive
locate -i *filetosearch*

# sort lines of a text file
sort fileA.txt
sort -r fileA.txt

# create tar archive file
tar -cvf archive-name.tar /home

# extract tar archive file
tar -xvf archive-name.tar

# find something named tecmint
find / -name tecmint