Mac – Fix for – ls: illegal option – usage: ls

May 27, 2015

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a@macbook:~/$ ls
ls: illegal option -- -
usage: ls [-ABCFGHLOPRSTUWabcdefghiklmnopqrstuwx1] [file ...]

Fix: Check the following files for “ls –color”

alias ls='ls -G'


~/.bashrc, .~/bash_aliases ~/.profile

a@macbook:~$ grep -Es "ls\s+--color" ~/.bash* ~/.profile
/Users/a/.bash_aliases:#alias ls='ls --color=auto'
/Users/a/.bashrc:    #alias ls='ls --color=auto'

References

1. https://superuser.com/questions/183876/how-do-i-get-ls-color-auto-to-work-on-mac-os-x

2. http://ninjasingh.blogspot.de/2012/09/ls-illegal-option.html