One way to run an external is to specify the complete path to the executable:
Code:
C:\Windows\System32\tasklist.exe
If the executable is in the search path, a sneaky quick method is to quote the name:
If you usually want this program rather than the internal command, create an alias:
Code:
alias tasklist=c:\windows\system32\tasklist.exe
Finally, if you
never want the internal command, you can disable it with SETDOS: