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hi, guys. I have a question.

If I have a long string like this:

8.0K:/home/test/brownj

How can I get a substring which starts from the last slash to the end of the string, so in this case,...

Hi, cfajohnson.

The code works well. Thanks for the reply. Again, I am very confused.. :)

-Keyang

Hi, daptal. I will miss the ":" after 206 if I used this code :)

-Keyang

Hi, idapswandog.

Thanks for the explaination. :)

But the line below I am not quite agree with you.

&& substr($1,7,2) ~ /j/ # AND containing a 'j' in positions 7 or 2 of field 1

This...

Hi, guys. I have one question:

I have a file called "group", the contents of it is below:

********************************
...
test:x:203:
sales:x:204:
repair:x:205:
research:x:206:brownj...

Hi, cfajohnson.

Thank you very much for you reply. The answer is short but confused :)

-Keyang

Hi, guys. I have one question, hope somebody can give me a hand

I have a file called passwd, the contents of it arebelow:

***********************
...
goldsimj:x:5008:200:...

Hi, Kenjackson

Thank you very much for your replay!

-Keyang

Hi, fpmurphy.

Your code works, but it has a problem in my case, it always gives me 2 messages:

join: File 1 is not in sorted order
join: File 2 is not in sorted order

Then I user sort...

Hi, Vgersh99.

Thank you very much for your reply!

-Keyang

Hi, guys. I have one question:

I have two files: passwd and shadow (the number of records in these files are not equal)the contents of them are below:

passwd:

**************
ftp:x:24:24:...

Hi, Dan.

The code doesn't work for my case, the same problem I met before with my code. It seems that I cannot pass any variable to awk and sed.

@general:

Is there anybody know how to solve...

Hi, Dan.

Thanks for answering again! I will try it out.

But can you tell me what is wrong with my code? if I don't use variables in my code, it works well. For example:

sed...

Hi, ghostdog74.

I am not supposed to use commands like suspend and passwd for this exercise. :(

Still, thanks for the reply. :)

-Keyang

hi, ghostdog74.

I am not changing the password in this way, I want to suspend the user, I add a string to the encrypted password, so the user is not able to login. I am new to Linux, so I do not...

Hi, guys. I have one question:

How can I search for a line with certain string in it and then insert a string into this line?
For example:

There is a file called shadow, the contents of it are...

Hi, Dan

Thank you very much for your reply.

-Keyang

Hi, guys. I have one question:

How can I search the lines in a file which do not have certain string in it.

For example, the file is called shadow, the contents of it is below:
...

Hi, guys. I have two questions:

I need to write a script, which can show all the non-suspended users on system, and suspend the selected user account.

There are two things I am not sure:

1....

Hi, Franklin52:

Thank you very much for your reply, it works well!

-Keyang

Hi ,guys. I have one question:

I want to write a script which removes a line with certain string from a file, for example

The name of the file is: "passwd", the contents of it is below:
...

Hi, guys. Thanks for replying.

And I will add answer next. Apologize for that:)

Found the answer.

Hi, guys. I have one question:

I need to search for a string in a file, and then extract another string from the file and assign it to a variable.

For example:

the contents of the file...