Annoying special cases: $ cd / $ nm=/foo $ ls | grep nm $ cd nm $ pwd /foo $ cd ~ $ ls | grep nm nm $ cd nm $ pwd

Annoying special cases: $ cd / $ nm=/foo $ ls | grep nm $ cd nm $ pwd /foo $ cd ~ $ ls | grep nm nm $ cd nm $ pwd ~/nm $ echo FFFFFUUUUUUUUU Inflexible: $ cd nm/jan/img cd: No such director nm/jan/img $ echo SHIT SHIT $ cd $nm/jan/img Worse, It's nonstandard and only saves you one chracter.