Last night I was creating some manual backups from a server including an entire web sites data files as well as the databases associated with that same web site. I decided to use the tar archiving utility to pack all of the files from the web site into a single file so it could be downloaded and stored easily. Use the information below to exclude a sub directory when creating a tar archive.
The rar command can be useful on Linux to not only compress a file but also split the file into multiple parts during the compression. This will make the files easier to transfer to other servers or easier for other people to download. First rar needs to be installed which can done on CentOS using the directions below. After that we describe how to easily compress and break a file into multiple chunks using one simple rar command.
I needed to clean up a directory on a server that included numerous directories each with numerous files inside each directory. I decided to write a quick shell script that would archive with tar and then compress with bzip2. The shell script requires you pass in a variable which could technically just be “*” to include all directories in the directory you are running the script from. Below is the content of the script followed by an explanation of each line of the script that will archive and compress numerous directories by looping through each directory to create a .tar.bzip2 file.