those variables used by the manual pager utilities. They include default paths to various programs ... followed and observed precisely, the manual pager utilities will not function…OVERRIDE=${DISPLAY} Now some simple variables PAGER DEFAULT=less MANPAGER DEFAULT=less LESS DEFAULTpts/6 │ │ ├─6509 -zsh │ │ └─6602 systemd-cgls --no-pager │ ... │ └─user-1001.slice │ ├─session-20.scope │ │ ├─6675 sshd: guest [privOVERRIDE=${DISPLAY} Now some simple variables PAGER DEFAULT=less MANPAGER DEFAULT=less LESS DEFAULT