### 3.9 history

‘history‘ command lists or saves previous entries in the history of the command line editing, or executes an entry.

Here you find ’usage by examples’:

          history               # show the complete history
          history 5             # show last 5 entries in the history
          history quiet 5       # show last 5 entries without entry numbers
          history "hist.gp"     # write the complete history to file hist.gp
          history "hist.gp" append # append the complete history to file hist.gp
          history 10 "hist.gp"  # write last 10 commands to file hist.gp
          history 10 "|head -5 >>diary.gp" # write 5 history commands using pipe
          history ?load         # show all history entries starting with "load"
          history ?"set c"      # like above, several words enclosed in quotes
          hi !reread            # execute last entry starting with "reread"
          hist !"set xr"        # like above, several words enclosed in quotes
          hi !hi                # guess yourself :-))

On systems which support a popen function (Unix), the output of history can be piped through an external program by starting the file name with a ’|’, as one of the above examples demonstrates.