How to see time stamps in bash history

Defining the environment variable named HISTTIMEFORMAT as follows:

$ HISTTIMEFORMAT="%d/%m/%y %T "

OR add to your ~/.bash_profile file, enter:

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

Where,

1. %d – Day
2. %m – Month
3. %y – Year
4. %T – Time

Use the source command to load HISTTIMEFORMAT from file into the current shell script or a command prompt:

$ . ~/.bash_profile

OR

$ source ~/.bash_profile

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