Issue a Linux command without it going into history

CORRECTION: Thanks to jduck for pointing it out, but you need to actually make a change to get this to work, reference: http://www.catonmat.net/blog/the-definitive-guide-to-bash-command-line-history/ and search for: Modifying History Behavior You simply put a space before it mubix@localhost:/tmp/demo$ ls -alh total 8.0K drwxr-xr-x 2 mubix mubix 4.0K Mar 1 19:43 . drwxrwxrwt 3 root root 4.0K Mar 1 19:43 .. -rw-r--r-- 1 mubix mubix 0 Mar 1 19:43 bob mubix@localhost:/tmp/demo$ cat ~/.