Bash history is a very useful command especially for older people who their memory betray them :). So increasing bash history sometimes can be very helpful. Usually default value is 1000 , so let’s see how to increase it.
Type the following command to show current value
env | grep HIS
Then open .bash_profile file usually at /home/yourusername/ to make a small modification
nano nano .bash_profile
add a line before path (usually before end of file) , the value must be greater than 1000 which is the default value, according to your needs, let’s double it
HISTSIZE=2000
modify export PATH to
export PATH HISTSIZE
and save it. To read the new value just type
source .bash_profile
To ensure that you have you make it all correct just type
env | grep HIS
and mention the new HISTSIZE value.
That’s it.