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Top Forums Shell Programming and Scripting How to delete all lines before a particular pattern when the pattern is defined in a variable? Post 303004034 by Soham on Monday 25th of September 2017 03:11:04 PM
Old 09-25-2017
Thx.. But this will not work. Lines are not just 'Line 1'. They contains some more text a;so. And I need to delete all lines before the last occurrence.

I could not construct a simple sed or awk script.
 

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STRRCHR(3)								 1								STRRCHR(3)

strrchr - Find the last occurrence of a character in a string

SYNOPSIS
string strrchr (string $haystack, mixed $needle) DESCRIPTION
This function returns the portion of $haystack which starts at the last occurrence of $needle and goes until the end of $haystack. PARAMETERS
o $haystack - The string to search in o $needle - If $needle contains more than one character, only the first is used. This behavior is different from that of strstr(3). If $needle is not a string, it is converted to an integer and applied as the ordinal value of a character. RETURN VALUES
This function returns the portion of string, or FALSE if $needle is not found. CHANGELOG
+--------+------------------------------------+ |Version | | | | | | | Description | | | | +--------+------------------------------------+ | 4.3.0 | | | | | | | This function is now binary safe. | | | | +--------+------------------------------------+ EXAMPLES
Example #1 strrchr(3) example <?php // get last directory in $PATH $dir = substr(strrchr($PATH, ":"), 1); // get everything after last newline $text = "Line 1 Line 2 Line 3"; $last = substr(strrchr($text, 10), 1 ); ?> NOTES
Note This function is binary-safe. SEE ALSO
strstr(3), strrpos(3). PHP Documentation Group STRRCHR(3)
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