commandline session
$ 4.2.36 1 501---> echo $HISTSIZE 500 $ 4.2.36 2 502---> cat ^C $ 4.2.36 3 503---> tac ^C $ 4.2.36 4 504---> echo $HISTSIZE 500 $ 4.2.36 5 505---> export $HISTSIZE=1 bash: export: `500=1': not a valid identifier $ 4.2.36 6 506---> export HISTSIZE=1 $ 4.2.36 7 500---> tic tic: File name needed. Usage: tic [-e names] [-o dir] [-R name] [-v[n]] [-V] [-w[n]] [-1aCcfGgILNrsTtUx] source-file $ 4.2.36 8 501---> tic tic: File name needed. Usage: tic [-e names] [-o dir] [-R name] [-v[n]] [-V] [-w[n]] [-1aCcfGgILNrsTtUx] source-file $ 4.2.36 9 502---> export HISTSIZE=500 $ 4.2.36 10 503---> echo $HISTSIZE 500 $ 4.2.36 11 504--->