This is our second post on compression and archiving series. Today we will see how to use gzip and gunzip commands with examples. Gzip(GNU zip) is a compress tool which is available in most of the Linux/Unix based operating systems. Until recent years gzip and bzip2 are most commonly used data compression tools in Linux/Unix. Though gzip compress ratios are not good when compared to bzip2 but it is popular among masses. Gzip software uses Lempel-Ziv coding (LZ77) algorithm for compressing data. In this post we will see how to install, use as well as tips about gzip command.

13 Zip and Unzip command examples in Linux/Unix

How to install gzip and gunzip(GNU unzip) command in Linux?

On Redhat, Centos and Fedora based machines

Read Full Post: http://www.linuxnix.com/7-linuxunix-gzip-and-gunzip-command-examples/

Today we will see how to set Sticky Bit in Linux. This is next to SGID in our ongoing File and Folder permissions series in Linux. We already discussed about CHMOD, UMASK, CHOWN,CHGRP, SGID and SUID file and folder permissions etc in our previous posts. In this post we will see

• What is Sticky Bit?
• Why we require Sticky Bit?
• Where we are going to implement Sticky Bit?
• How to implement Sticky Bit in Linux?

What is Sticky Bit?

Sticky Bit is mainly used on folders in order to avoid deletion of a folder and its content by other users though they having write permissions on the folder contents. If Sticky bit is enabled on a folder, the folder contents are deleted by only owner who created them and the root user. No one else can delete other users data in this folder(Where sticky bit is set). This is a security measure to avoid deletion of critical folders and their content(sub-folders and files), though other users have full permissions

Read Full Post: http://www.linuxnix.com/sticky-bit-set-linux/

This is a small post on how to crate multiple files/folders, sequence generation with flower brackets in-order to save valuable time.

Creating empty files can be done with touch command. We will see how to create multiple files using this command in one shot.

Example 1: Create a file with name abc.txt

touch abc.txt

Example2: Create multiple files abc, cde, efg, hij, klm

touch  abc cde efg hij klm

Example 3: How about creating 1 to 20 files, ie creating multiple files with one command. Its bit tedious job for an admin. Don’t worry Linux provide us with some useful option with “Flower braces†to do expansion. Instead of writing below command

touch 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

We can create 20 files using flower brace {} expansion as shown below..

Read Full Post: http://www.linuxnix.com/12-examples-flower-brackets-linux/