[SOLVED] Display users with symbol 'w'

danieella · 12-10-2012, 05:49 AM

Hello everyone. Please i need your help to display users in a system that contain 'W' symbol in their name and store the information in a file. Thank you

'cat /etc/passwd' just display all users.

druuna · 12-10-2012, 06:16 AM

This looks a bit like homework to me, so I'm going to provide a hint:

The grep command comes to mind. You do need to be careful and write a regular expression that only looks at the username field.

danieella · 12-10-2012, 06:26 AM

Quote:

Originally Posted by druuna

This looks a bit like homework to me, so I'm going to provide a hint:

The grep command comes to mind. You do need to be careful and write a regular expression that only looks at the username field.

I am learning to use putty and answering questions randomly
I know cat /etc/passwd display all users. I need to know how to filter by displaying users with a particular character or symbol in their name. Thanks

druuna · 12-10-2012, 06:36 AM

Using grep:

Code:

grep "^.*a.*:x:" /etc/passwd

or, using awk (probably preferable):

Code:

awk -F: '$1 ~ "a" { print }' /etc/passwd

danieella · 12-10-2012, 06:44 AM

Quote:

Originally Posted by druuna

Using grep:

Code:

grep "^.*a.*:x:" /etc/passwd

or, using awk (probably preferable):

Code:

awk -F: '$1 ~ "a" { print }' /etc/passwd

Using putty. The above command doesnt seem to work in putty

druuna · 12-10-2012, 07:03 AM

I used an a instead of a w in my example.

danieella · 12-10-2012, 07:07 AM

Thanks drunna. I appreciate

shivaa · 12-10-2012, 09:11 AM

Quote:

Using putty. The above command doesnt seem to work in putty...

Putty is a terminal emulator, not command interpretter. Commands are specific to your OS or working shell, not to any tool like Putty. Same command will work in every tool if used in same OS and shell.