Linux

Hello Reader,

The History of Linux began in 1991 with the commencement of a personal project by a Finnish student, Linus Torvalds, to create a new free operating system kernel.

Since then, the resulting Linux kernel has been marked by constant growth throughout its history. Since the initial release of its source code in 1991, it has grown from a small number of C files under a license prohibiting commercial distribution to its state in 2009 of over 370 megabytes of source under the GNU General Public License.^[1]

Continue reading on wiki

learn shell scripting tricks : Scripts,AWKing

system management : Linux, Centos, Ubuntu

#What was the command I executed yesterday?

history #This returns list of commands executed in past.

#History with dates when executed.

echo 'export HISTTIMEFORMAT="%d/%m/%y %T "' >> ~/.bashrc

source ~/.bashrc

history #Now onwards history command shows commands with their execution time.  

#Where are my commands stored.

echo $HISTFILE