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Old 12-10-2012, 05:49 AM   #1
danieella
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Display users with symbol 'w'


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.
 
Old 12-10-2012, 06:16 AM   #2
druuna
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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.
 
Old 12-10-2012, 06:26 AM   #3
danieella
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Home schooling

Quote:
Originally Posted by druuna View Post
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
 
Old 12-10-2012, 06:36 AM   #4
druuna
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Using grep:
Code:
grep "^.*a.*:x:" /etc/passwd
or, using awk (probably preferable):
Code:
awk -F: '$1 ~ "a" { print }' /etc/passwd
 
Old 12-10-2012, 06:44 AM   #5
danieella
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Quote:
Originally Posted by druuna View Post
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
 
Old 12-10-2012, 07:03 AM   #6
druuna
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I used an a instead of a w in my example.
 
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Old 12-10-2012, 07:07 AM   #7
danieella
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Thank

Thanks drunna. I appreciate
 
Old 12-10-2012, 09:11 AM   #8
shivaa
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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.
 
  


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