Need help Basic Web Hacking #6

I don't understand why my UNIX commands are acceptable!! I use the chmod to change the access to the file logx.txt with a+x on /logs/logs.txt. Then i type the comand to remove the logs on logs/logs.txt and finally i input the comand to remove the hidden file that tracks us, and still it sais my commands are incorrect… Can someone help me out please?!?! Been on this for 3 days now :X searched on google a lot :angry:

you need to execute the commands this way: $<space><command>

it becomes this: $ chmod

for example..

(I didn't complete the chall, btw)

if you want you can pm me what you got i can tell you whats wrong.