Você pode desativar --classify
seletivamente usando --indicator-style=none
:
$ alias lc='ls --classify --color=auto'
$ lc -ld foo bar baz
drwxr-xr-x 6 user group 4096 2010-07-19 09:09 foo/
-rwxr--r-- 1 user group 19035 2010-09-30 17:39 bar*
-rw-r--r-- 1 user group 26 2010-11-29 00:44 baz
$ lc -ld --indicator-style=none foo bar baz
drwxr-xr-x 6 user group 4096 2010-07-19 09:09 foo
-rwxr--r-- 1 user group 19035 2010-09-30 17:39 bar
-rw-r--r-- 1 user group 26 2010-11-29 00:44 baz