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Match exact String with sed command

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Top Forums Shell Programming and Scripting Match exact String with sed command
# 8  
Old 02-10-2017
There is no problem, the sed in post#1 works i.e. returns the first section from the given data.txt!
Maybe it is in WinDOS\r format?
# 9  
Old 02-10-2017
DB
Quote:
Originally Posted by Corona688
Show your actual input, please. Attach it if necessary.
The problem i dont get any output is becoz if there is any newline between the start string and end string in data.txt your suggestion will return not give desired result as expected.

Somehow we can disregard the newlines between the search strings ?

---------- Post updated at 06:26 PM ---------- Previous update was at 06:21 PM ----------

Quote:
Originally Posted by MadeInGermany
There is no problem, the sed in post#1 works i.e. returns the first section from the given data.txt!
Maybe it is in WinDOS\r format?
Please consider newlines between the search strings.

I dont know what is and how to confirm if i have WinDOS\r format.
Last edited by mohtashims; 02-10-2017 at 07:47 PM..
# 10  
Old 02-10-2017
The /pat1/,/pat2/ or \|pat1|,\|pat2|
is a range match, from the line where pat1 matches up to the line where pat2 matches. The p command prints the range.
Because your pat1 and pat2 end with a $ there must not be a trailing character.
Open the file with vi (not vim). Is there a trailing ^M or space character at the end of the line?
Tip: a trailing space character becomes visible in vi after a :set list (the line ends are shown as $). Switch back to the normal view mode with :set nolist
Last edited by MadeInGermany; 02-10-2017 at 08:01 PM..
# 11  
Old 02-10-2017
Quote:
Originally Posted by MadeInGermany
The /pat1/,/pat2/ or \|pat1|,\|pat2|
is a range match, from the line where pat1 matches up to the line where pat2 matches. The p command prints the range.
Because your pat1 and pat2 end with a $ there must not be a trailing character.
Open the file with vi (not vim). Is there a trailing ^M or space character at the end of the line?
Tip: a trailing space character becomes visible in vi after a :set list (the line ends are shown as $). Switch back to the normal view mode with :set nolist
I am pasting everything here so you can try the same and see it failing. By the way the issue was the format of data.txt

Code:
sed -n "\|Start_of_DISK_info:$lines$|,\|End_of_DISK_info:$lines$|p" data.txt
Output:
Start_of_DISK_info:/u

Disk: /u
CURRENT=81
Disk Growth Weekly=
Disk Growth Monthly=
End_of_DISK_info: /u        ----> there is a space between : and /u causing the problem.
Start_of_DISK_info:/u/tmp

Disk: /u/tmp
CURRENT=1
Disk Growth Weekly=
Disk Growth Monthly=
End_of_DISK_info:/u/tmp

And now ....

Code:
cat -ev data.txt
$
Start_of_DISK_info:/u$
$
Disk: /u$
CURRENT=81$
Disk Growth Weekly=$
Disk Growth Monthly=$
End_of_DISK_info: /u$
Start_of_DISK_info:/u/tmp$
$
Disk: /u/tmp$
CURRENT=1$
Disk Growth Weekly=$
Disk Growth Monthly=$
End_of_DISK_info:/u/tmp$

Thank you for all the help.
Last edited by mohtashims; 02-10-2017 at 08:19 PM..
# 12  
Old 02-11-2017
Allow the spaces with
Code:
sed -n "\|Start_of_DISK_info: *$lines$|,\|End_of_DISK_info: *$lines$|p" data.txt
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