Bash History: Display Date And Time For Each Command

“How do I display shell command history with date and time under
UNIX or Linux operating systems?

“If the HISTTIMEFORMAT is set, the time stamp information
associated with each history entry is written to the history file,
marked with the history comment character. Defining the environment
variable as follows:

$ HISTTIMEFORMAT=”%d/%m/%y %T “

“OR

$ echo ‘export HISTTIMEFORMAT=”%d/%m/%y %T “‘ >>
~/.bash_profile

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