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Full Discussion: sed very confused
Top Forums Shell Programming and Scripting sed very confused Post 302184533 by minifish on Friday 11th of April 2008 04:14:28 PM
Old 04-11-2008
sed very confused

Hello experts,
I have this complicated code that output value in between pattern and add "a string" to the front of the output.
The problems I have many pattern that are the same.
so I want to know how to get the value between 1st pattern, 2nd pattern etc.
Any suggestions?

sed -n '/<pattern>/s/.*>\(.*\)<.*/a string\1/gp' file


file:
<Pattern>file<\Pattern>
<Pattern>file2<\Pattern>
..
<Pattern>file3<\Pattern>
..
<Pattern>file4<\Pattern>

sed -n '/<pattern>/s/.*>\(.*\)<.*/string=\1/gp' file
returns:

string=file
string=file2
string=file3
string=file4

but I want a sed command that gets only the value between the 3rd occurrence of pattern

string=file3

Last edited by minifish; 04-11-2008 at 06:04 PM..
 

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EvmEventNameMatch(3)					     Library Functions Manual					      EvmEventNameMatch(3)

NAME
EvmEventNameMatch(), EvmEventNameMatchStr() - match EVM event name SYNOPSIS
Library EVM Support Library Parameters pattern The event name pattern sought. The pattern may be any valid event name string. It may include wildcard characters in place of any component. event The event containing the event name to be compared against the pattern. match The result of the match. This operand is set to if the name matches the pattern, and to if it does not. candidate A character string to be matched against the pattern DESCRIPTION
Because special matching rules apply when deciding whether a candidate event name matches a known name, the EVM name matching functions should be used for matching purposes, rather than the C string comparison functions The EVM functions match an event name against a sup- plied pattern, ignoring any trailing appended components in the candidate name, and correctly matching wildcard characters. The function takes an event and an event name pattern as input, and returns an indication of whether the event contains a name which matches the pattern in the match output argument. The pattern may be any valid event name string, and may also include wildcard characters in place of any component. A wildcard in the pattern matches zero or more name components. A matches exactly one component. A match occurs if the event name matches all components indicated by the pattern, even if the name has additional trailing elements. The function performs the same check as but takes a character string as the candidate event name, instead of extracting the candidate event name from a supplied event. Both functions set the match output argument to if the name matches the pattern, and to if it does not. RETURN VALUE
The operation completed without error. The comparison was successful. The value of the match operand indicates whether the name matches the pattern. One of the arguments to the function is invalid. The supplied pattern contains invalid characters. The supplied event does not contain a name. ERRORS
The value of is not set. SEE ALSO
Routines memccpy(3C), strcat(3C). Event Management EVM(5). EVM Events EvmEvent(5). EvmEventNameMatch(3)
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