When working using bash, zsh, ksh or any other Unix shell the default is to save the history of the typed in commands, this can become a security and privacy risk. Stop the history file keeping a copy of typed in commands This can be used any time  you like assuming you have administrator rights [...]

For those of you comfortable on the command line, there’s an alternative way to password a file using the free utility OpenSSL. Say you want to password protect a tar archive of documents called unencrypted-data.tar. From the command line, type: $ openssl des3 -salt -in unencrypted-data.tar -out encrypted-data.tar.des3 enter des-ede3-cbc encryption password: Verifying – enter [...]