[SIZE=3] I've down a software which is *.tar.gz,
and after I 've ./configure && make && make install
It told me these : libnasl has been sucessfully installed.
Make sure that /usr/local/bin is in your PATH before you
continue [SIZE]

I don't know what "in your PATH" mean, "my PATH"????
,whata my PATH is ??

Can anybody explain it for me ?? thanks in advance !

PATH refers to the directories your system searches for executables. Typically, your PATH does include /usr/local/bin. Do

echo $PATH
and look at its output. If you see /usr/local/bin, you're all set. If it isn't, edit your .bash_profile in your home directory by adding the following lines:

PATH=$PATH:/usr/local/bin
export PATH

first ,thanks for your help,,
The result of $PATH are:
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/root/bin ;

but ,when I am using nessus-mkcert to create a certificate for nessusd ,it told me that :

nessusd: error while loading shared libraries: libnasl.so.2: cannot open shared object file: No such file or directory
Executing nessusd failed. Make sure your library loader is configured properly
and that nessusd is in your $PATH

and ,,I have installed libnasl sucessfully ,then what's the problem ???

I noticed on their instructions:
If you are using Linux, then make sure that /usr/local/lib is in /etc/ld.so.conf, and type ldconfig.

did you do this? My /etc/ld.so.conf doesn't contain /usr/local/lib. If you're in the same boat, add the line
/usr/local/lib
to the file and then do
ldconfig

Wo ~Wo~~ It works !! thank you !!!

But ...I don't know how to use it !!!



but,I think I can find it ....thanks !!!