[liberta@ptlab liberta]$ ll
합계 5048
 (snip..!)
 [liberta@ptlab liberta]$ unalias ll   # Use this! :-)
[liberta@ptlab liberta]$ ll
bash: ll: command not found
[liberta@ptlab liberta]$ ^^;
bash: :s^^;: no previous substitution
[liberta@ptlab liberta]$ ?? -_-a
bash: ??: command not found
[liberta@ptlab liberta]$ exit--왠종일 태양만 좇아 다니면 결국 제자리로 돌아오더군요...