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Retreive string between two chars

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Top Forums Shell Programming and Scripting Retreive string between two chars
# 15  
Old 03-18-2007
Quote:
Originally Posted by danland
when i run a grep and put the result in a file (in the prompt mod) everything is okay and i dont that problem.
but I have written a script that when running it , it does the following:

1. backups the log file (that one that is written into)
2. creating a new tmp file
3. searching the file using grep

when looking inside the new grep file i have this problem.

What are the differences between the code you run at the prompt and the code in the script? Post the actual code. Do not retype it.

What are the differences in the environment between the prompt and that of the script? How do you run the script?

Are you sure you are grepping the same file in both cases? What does the file contain?

# 16  
Old 06-25-2007
one more thing to ask
hello everyone again,
I have a little problem.
When i am running a 'grep' ( 'grep LOGIN *' ) on some log files (each new line is represented by a file called IMI_acc3_**.log. as you can see i get 5 lines that contain same fields but different data , for instance:
"
IMI_acc3_070625_0055.log:IMI|DEBUG|25.06.2007 10:48:48|10580|1073802272| : IMAP COMMAND RECV: [ABCD0 LOGIN 972V\ALLfXkZdbKB6o_cU7s2c89bwK9vg8N4VwR5MP84Rg92lR3Bv36eBsA--]
IMI_acc3_070625_0055.log:IMI|DEBUG|25.06.2007 10:52:17|10591|1073802272| : IMAP COMMAND RECV: [ABCD0 LOGIN 972fm\4 CMV\cine99matic]
IMI_acc3_070625_0056.log:IMI|DEBUG|25.06.2007 10:59:59|10601|1073802272| : IMAP COMMAND RECV: [ABCD0 LOGIN 972CMV\testing]
IMI_acc3_070625_0057.log:IMI|DEBUG|25.06.2007 11:02:21|10607|1073802272| : IMAP COMMAND RECV: [ABCD0 LOGIN 972CMV\testing]
IMI_acc3_070625_0058.log:IMI|DEBUG|25.06.2007 11:03:51|10608|1073802272| : IMAP COMMAND RECV: [ABCD0 LOGIN 972CMV\testing]
grep: imi.server.sock: No such device or address".

Now how can i extract the one before the last line "IMI_acc3_070625_0058.log:IMI|DEBUG|25.06.2007 11:03:51|10608|1073802272| : IMAP COMMAND RECV: [ABCD0 LOGIN 972CMV\testing]"

is it possible to do it with 'awk' command ?
# 17  
Old 06-25-2007
Code:
grep ... | sed -n 'N;/IMI_acc3_070625_0058.log/{P;q;};D'

Last edited by anbu23; 06-25-2007 at 08:44 AM..
# 18  
Old 06-25-2007
what does the "N/***/P" represent??

Thx
daniel
# 19  
Old 06-25-2007
hello anbu23,
Thx for the message but i didin't explain myself...

regardless of what is written, i need to retrieve the line (one before the last).
What you gave me is a search according to "IMI_acc3..." and this i dont want.
when running the command i recieve nothing.


Appreciate your help,

Daniel
# 20  
Old 06-25-2007
Quote:
Originally Posted by danland
hello anbu23,
Thx for the message but i didin't explain myself...

regardless of what is written, i need to retrieve the line (one before the last).
What you gave me is a search according to "IMI_acc3..." and this i dont want.
when running the command i recieve nothing.


Appreciate your help,

Daniel
Code:
grep ... | sed -n 'N;${P;q;};D'

# 21  
Old 06-25-2007
Can you please explain what the option represent???

I ran the command but i get the wrong line

// before adding the change
[root@acc3 imi]# grep LOGIN * | grep 972525403496
IMI_acc3_070625_0055.log:IMI|DEBUG|25.06.2007 10:48:48|10580|1073802272| : IMAP COMMAND RECV: [ABCD0 LOGIN 972525403496:0:0\ariel_nackash\3 CMV\ALLfXkZdbKB6o_cU7s2c89bwK9vg8N4VwR5MP84Rg92lR3Bv36eBsA--]
IMI_acc3_070625_0055.log:IMI|DEBUG|25.06.2007 10:52:17|10591|1073802272| : IMAP COMMAND RECV: [ABCD0 LOGIN 972525403496:0:0\arieln14@fastmail.fm\4 CMV\cine99matic]
IMI_acc3_070625_0056.log:IMI|DEBUG|25.06.2007 10:59:59|10601|1073802272| : IMAP COMMAND RECV: [ABCD0 LOGIN 972525403496:0:0\mobilemailqa138\1 CMV\testing]
IMI_acc3_070625_0057.log:IMI|DEBUG|25.06.2007 11:02:21|10607|1073802272| : IMAP COMMAND RECV: [ABCD0 LOGIN 972525403496:0:0\mobilemailqa138\1 CMV\testing]
IMI_acc3_070625_0058.log:IMI|DEBUG|25.06.2007 11:03:51|10608|1073802272| : IMAP COMMAND RECV: [ABCD0 LOGIN 972525403496:0:0\mobilemailqa138\1 CMV\testing]
grep: imi.server.sock: No such device or address

// after writing what you recommended.

[root@acc3 imi]# grep LOGIN * | grep 972525403496 | sed -n 'N;${P;q;};D'
grep: imi.server.sock: No such device or address
IMI_acc3_070625_0057.log:IMI|DEBUG|25.06.2007 11:02:21|10607|1073802272| : IMAP COMMAND RECV: [ABCD0 LOGIN 972525403496:0:0\mobilemailqa138\1 CMV\testing]

as you can see i am getting the wrong line. can you please explain what the options mean so i could try to understand by myself....

Thx,
Daniel
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