Another Linux problem. Please help me.

[Harlequin]

The problem is that follows:
Construct a program (Shell script), called VERIF that asks for a name and verifies if it appears in other file called LISTING

I dont know how begin with this problem....

HARLEQUIN.

[Rob Pomeroy]

man grep

man awk

Remember that all programs return an exit code which indicates their success or failure.

Good luck.

[Harlequin]

Ok. Thanks for this clue. I will try doing something in that sense...

And I will tell you...

HARLEQUIN

[Rob Pomeroy]

Actually, I should have said

info gawk

since the Texinfo page is much better than the man page, and the utility's proper name on Linux systems is usually "gawk" (Gnu awk).

[Harlequin]

I just done it!!

the code is like follows:

user@linux> //(this is the prompt)
user@linux> cat > LISTING
James
Edward
Jhon
Peter
Paul
user@linux> //(and the file that contains the names is ready)

Now comes the shell script:

echo -n "Write a name: "
read name
if (grep -c $name LISTING) then
           echo "This name exists in LISTING file."
else
           echo "This name doesn´t exist in LISTING file."
fi

And this runs so fine....
Thanks very much Robpomeroy.... You have saved my life...
HARLEQUIN

[Rob Pomeroy]

Well done!