topic Re: script formatting problem in Operating System - HP-UX

script formatting problem

Khashru — Tue, 07 Feb 2006 23:16:00 GMT

Hi,

I am running the folloing script

echo "enter user name"
read a
echo "Login name User Name"
echo "`cat /etc/passwd |grep $a |cut -d ":" -f1,5 | cut -d "," -f1 |cut -d ":" -f1` `cat /etc/passwd |grep $a |cut -d ":" -f1,5 | cut -d "," -f1 |cut -d ":" -f2`"

It works very good if there is only one user in the password file. the output comes like
Login name User Name
mayub Mohammad Ayub

But when there is more then one person the output comes like

Login name User Name
ssingh
psingh
gsingh
psingh1 Shobhana Singh
Parwin Singh
Gurvinder Singh
Priya Singh

i want then like

Login name User Name
mayub Mohammad Ayub

How can i do that

Re: script formatting problem

Steven E. Protter — Tue, 07 Feb 2006 23:33:51 GMT

Shalom Khashru,

echo "enter user name"
read a
echo "enter login"
read b
grep $b /etc/passwd | grep $a | awk -F: '{print $1}'
# not sure on the verification part what you want but this will surely get ONLY one line out of /etc/passwd
# note using passwd file this way is not recommended.
# If I've nnot got it exactly right, just add another read statement.

The cut command is inferior to awk in this case because awk can parse this database (that is what passwd is) by its field boundries, the colon.

SEP

Re: script formatting problem

Khashru — Tue, 07 Feb 2006 23:46:21 GMT

The person who will be using it will not know the login name. he will only know user first name or last name. My plan is to give him the choice so that he can see login name beside user full name and understand what is the login name for that particular user.

Re: script formatting problem

Vibhor Kumar Agarwal — Tue, 07 Feb 2006 23:52:10 GMT

How about this:

echo "enter user name"
read a
echo "Login name User Name"
ypcat passwd | grep $a | awk -F":" '{print $1,$5}'

Re: script formatting problem

Patrick Wallek — Tue, 07 Feb 2006 23:55:17 GMT

How about this instead of your echo statement:

grep $a /etc/passwd | awk -F : '{print $1,$5}'

Re: script formatting problem

Khashru — Tue, 07 Feb 2006 23:56:36 GMT

I donot have nis here. so i am using cat. it gives formatted output but there is three,,, back of the name. i need to clear that

Login name User Name
ssingh Shobhana Singh,,,
psingh Parwin Singh,,,
gsingh Gurvinder Singh,,,
psingh1 Priya Singh,,,

Re: script formatting problem

Arunvijai_4 — Wed, 08 Feb 2006 00:02:44 GMT

Hi,

You can use "awk". It provides better ease use just like, awk -F : '{print $1,$5}'

-Arun

Re: script formatting problem

Jakes Louw — Wed, 08 Feb 2006 00:25:53 GMT

Well, if there is no entry in the "description" optional field, you will get results like that. First clean up and correct the /etc/passwd file, then your results will be more consistent, regardless of whether you use cut or awk.

If you want to check for a null (empty) field, then the script gets more complex, but I can help with that.

Re: script formatting problem

Vibhor Kumar Agarwal — Wed, 08 Feb 2006 00:37:14 GMT

Are these 3 ,,, as a result of awk or cut.

There might be a error in cutting of the fields.

Re: script formatting problem

Muthukumar_5 — Wed, 08 Feb 2006 01:16:43 GMT

Can you give as your sample /etc/passwd entry here. It will be helpful.

This script line of,

echo "`cat /etc/passwd |grep $a |cut -d ":" -f1,5 | cut -d "," -f1 |cut -d ":" -f1` `cat /etc/passwd |grep $a |cut -d ":" -f1,5 | cut -d "," -f1 |cut -d ":" -f2`"

is very odd. You have written a simple thing in a big manner. Kwel.

We will help you out. For formatting better use printf rather than echo.

--
Muthu

Re: script formatting problem

Muthukumar_5 — Wed, 08 Feb 2006 01:38:49 GMT

How you are using more than one persion ? Are you giving input with read a as,

user1 user2?

echo "enter user name"
read a
echo "Login name User Name"
echo "`cat /etc/passwd |grep $a |cut -d ":" -f1,5 | cut -d "," -f1 |cut -d ":" -f1` `cat /etc/passwd |grep $a |cut -d ":" -f1,5 | cut -d "," -f1 |cut -d ":" -f2`"

It will generate for only one user else error. Can you post exact script contents and /etc/passwd entry for two users?

--
Muthu

Re: script formatting problem

john korterman — Wed, 08 Feb 2006 03:16:02 GMT

Hi,

your grep statement probably matches more than a single name/line. If you run 11.11, try changing:

grep $a
to
grep -w "$a"

which will force grep to match only whole words. This will of course not guarantee match of only a single name/line, but may be an improvement.

regards,
John K.

Re: script formatting problem

Amit Agarwal_1 — Wed, 08 Feb 2006 07:56:48 GMT

Try out

read a
awk -F':' -v user=$a '{ if(match($1, user)!=0) printf("%s %s\n", $1, $4); }' < /etc/passwd

You can even enhance printf format string as you want.

Re: script formatting problem

James R. Ferguson — Wed, 08 Feb 2006 09:11:28 GMT

Hi Khashru:

If you don't mind using perl, the following script will offer what you want.

The script considers the username to be the string of characters in the 'gecos' field up until the first comma if there is one. If the 'gecos' field is empty "[no info]" is reported. If a login name isn't valid, that is reported instead.

# cat ./whatuser
#!/usr/bin/perl
use strict;
use warnings;
my ($name, $gecos);
print "Enter user name (^C to quit)\n";
while (1) {
chomp ($name = <>);
($name,undef,undef,undef,undef,undef,$gecos) = getpwnam $name;
if (defined $name) {
$gecos =~ m/(.+?),/;
printf "%-8s %-16s\n", $name, $1 ? $1 : "[no info]";
} else {
warn "isn't a valid login\n";
}
}

Regards!

...JRF...

Re: script formatting problem

Patrick Wallek — Wed, 08 Feb 2006 09:25:54 GMT

If you are intent on using the shell, then give this a try:

grep $a /etc/passwd | awk -F : '{print $1,$5}' | cut -d , -f 1

Re: script formatting problem

Chan 007 — Wed, 08 Feb 2006 09:53:23 GMT

Other way,

using finger add $9 if you have users with middle name too.

for i in $(cat /etc/passwd |awk -F ":" '{print $1}')
do
echo $i
finger $i |grep "In real life" |awk '{print $3 ":" $7 $8}'>> /tmp/t1
done

Re: script formatting problem

Chan 007 — Wed, 08 Feb 2006 10:22:07 GMT

Sorry,

to my reply, you have to cat /vi/view the output at /tmp/t1.

Chan

Re: script formatting problem

Khashru — Wed, 08 Feb 2006 17:16:45 GMT

Hi Patrick Wallek,

I user your script and it solved my problem.

Hi JFR,

I donot use parl script.

Thanks