$ emcas zsh: command not found: emcas $ grep emcas .zsh-history* .zsh-history:: 1170076846:0;emcas ldr-unread.pl .zsh-history:: 1170077658:0;emcas .zsh-history:: 1170082007:0;locate emcas .zsh-history:: 1170092165:0;emcas .zsh-history:: 11…