command not found

cobweb · 02-25-2006, 11:42 AM

i am using Ubuntu 5.10 right now, and i don't know what the problem with it is!!! when i try to execute some commands(especially very essential ones), i get "command not found" error!

some typical exemaples for such commands are fork, exec or mkinitrd..

how could i actually get these commands since apt-get install does not work!

thanks in advance,
any help will be appreciated.

anti.corp · 02-25-2006, 11:47 AM

Hi,

Did you try to type 'sudo' infront of those commands?

Sincerely, Jørgen

cobweb · 02-25-2006, 11:49 AM

yeah thanks i am in the root mode already.

druuna · 02-25-2006, 11:51 AM

Hi,

I don't know what you find essential and what not, but if you are talking about commands that need root permissions maybe the following will help:

Are you executing these command as root? And if you used su to become root, did you do a su - root, the - is essential.

If so, are the sbin directories (/sbin, /usr/sbin etc) in your PATH setting (echo $PATH to find out).

Hope this helps.

cobweb · 02-25-2006, 11:55 AM

druuna, i checked everything you offered. but yes everything is in order, what could be other reasons? basically when i type

man fork

it says that there exists no manual for command fork..

druuna · 02-25-2006, 12:16 PM

Hi again,

Did you check if the manpage for fork is actually present? Do a locate fork | grep man to check. If you don't have locate installed try: find /usr -name "fork.[0-9]*" -print.

If you get a hit (something like: /usr/share/man/man2/fork.2, check to see if the path part is in your MANPATH (check /etc/man.conf).

About the fork and exec 'commands': Those commands cannot be run from the commandline. Could you give some examples of the commands you are trying to execute.

Hope this helps.