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Full Discussion: How to process only new line of tail -f command from live log file?
Top Forums Shell Programming and Scripting How to process only new line of tail -f command from live log file? Post 302864867 by ketanraut on Thursday 17th of October 2013 09:25:29 AM
Old 10-17-2013
Linux How to process only new line of tail -f command from live log file?
Hi,

I want to read a live log file line by line and considering those line which are newly added to file
Below code I am using, which read line but as soon as it read new line from log file its starts processing from very first line of file.

Code:
tail -F /logs/COMMON-ERROR.log | while read myline; do
ERROR_CODE=$(echo $ myline | awk -F ' ' '{for (i=1;i<=NF;i++){if($i ~ "^[1-1]" && length($i)==6){print $i}}}')
ERROR_CODE_DET=$(echo $ myline | awk -F ' ' '{print $1" "$2}')
echo "$ERROR_CODE_DET" "$ERROR_CODE"

if [ "$ERROR_CODE" -eq 100021 ] ; then
ERROR_MSG="Route failed. Moving to failed routes pool."
fi
done

Last edited by vbe; 10-17-2013 at 10:50 AM.. Reason: code tags + rm fancy fonts...
 

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LEARN ABOUT DEBIAN

mfontset_lookup

mfontset_lookup(3m17n)						 The m17n Library					    mfontset_lookup(3m17n)

NAME

       mfontset_lookup - Lookup a fontset.

SYNOPSIS

       MPlist * mfontset_lookup (MFontset * fontset, MSymbol script, MSymbol language, MSymbol charset)

DESCRIPTION

       Lookup a fontset. The mfontset_lookup() function lookups fontset and returns a plist that describes the contents of fontset corresponding
       to the specified script, language, and charset.

       If script is Mt, keys of the returned plist are script name symbols for which some fonts are specified and values are NULL.

       If script is a script name symbol, the returned plist is decided by language.

       o If language is Mt, keys of the plist are language name symbols for which some fonts are specified and values are NULL. A key may be Mt
	 which means some fallback fonts are specified for the script.
       o If language is a language name symbol, the plist is a FONT-GROUP for the specified script and language.  FONT-GROUP is a plist whose keys
	 are FLT (FontLayoutTable) name symbols (Mt if no FLT is associated with the font) and values are pointers to MFont.
       o If language is Mnil, the plist is fallback FONT-GROUP for the script.
       If script is Mnil, the returned plist is decided as below.
       o If charset is Mt, keys of the returned plist are charset name symbols for which some fonts are specified and values are NULL.
       o If charset is a charset name symbol, the plist is a FONT-GROUP for the charset.
       o If charset is Mnil, the plist is a fallback FONT-GROUP.
RETURN VALUE

	   It returns a plist describing the contents of a fontset. The plist should be freed by m17n_object_unref().
COPYRIGHT

       Copyright (C) 2001 Information-technology Promotion Agency (IPA)
       Copyright (C) 2001-2011 National Institute of Advanced Industrial Science and Technology (AIST)
       Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License
       <http://www.gnu.org/licenses/fdl.html>.

Version 1.6.2							    12 Jan 2011 					    mfontset_lookup(3m17n)
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