On Mon, 4 Oct 2021 at 12:40, Shaozhong SHI <shishaozhong@xxxxxxxxx> wrote: > How to set up temporary path for starting up psql in any folder? > I do not want to disrupt existing settings of paths. You will need to provide a lot more details ( like your OS, and wheter you just want to open the "psql" binary or modify the paths for other things ). In simple OSs like mine, plain Debian Linux, you can start psql in the folder $FOLDER by just doing "$FOLDER/psql". To launch it using temporary override of PATH you will need to do "PATH=$FOLDER:$PATH psql". But anyway, this is a shell-101 question, not much to do with postgres, you'll have to ask someone who knows your os/shell/whatever. Francisco Olarte.