On: Improving the security of your SSH private key fil...

[q_revert]

i'm not sure if it works in all shells, but at least in zsh/bash doing

   $ echo "this will not be saved in history"
 

as opposed to

   $echo "this will be saved in history"

can be useful

[pooriaazimi → q_revert]

AFAIK, in bash/zsh you have to do

    export HISTCONTROL=ignoredups:ignorespace 

in .bashrc or .bash_profile for the above trick to work.

fish, OTOH, seems to do this by default.