Thank you Ravinder for your help. Following is the detailed info for which I seek help. I have 4 log files auto generated by some binary with the names as given below.
Code:
-rw------- 1 nz nz 7.9K May 8 14:07 backupsvr.16897.2016-05-08.log
-rw------- 1 nz nz 4.1K May 8 14:23 backupsvr.7474.2016-05-08.log
-rw------- 1 nz nz 162K May 8 14:38 backupsvr.25848.2016-05-08.log
-rw------- 1 nz nz 47K May 8 18:40 backupsvr.29230.2016-05-08.log
What I did is that I listed the files of my choice of date and put the names into another file by using the following command.
Code:
ls *`date +%Y-%m-08`* > output.txt
Not the new file "output.txt" contains all 4 file names from 08th May 2016.
Now I want to fetch 2nd last line from each file and put them into one new file. i.e 2nd last line of 1st file is as "a completed successfully". 2nd file's 2nd last line is "b completed successfully".
I want these 2nd last line into one final file which output would be as below.
Code:
#cat finalfile.txt
a completed successfully
b completed successfully
c completed successfully
d completed successfully
I hope my requirement is clear now. If not please let me know and I will try to explain it more.
Regards,
Ali
Moderator's Comments:
Please use code tags as required by forum rules!
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LEARN ABOUT CENTOS
rake
RAKE(1) Ruby Programmers Reference Guide RAKE(1)NAME
rake -- Ruby Make
SYNOPSIS
rake [--f Rakefile] [--version] [-CGNPgnqstv] [-D [PATTERN]] [-E CODE] [-I LIBDIR] [-R RAKELIBDIR] [-T [PATTERN]] [-e CODE] [-p CODE]
[-r MODULE] [--rules] [variable=value] target ...
DESCRIPTION
Rake is a simple ruby(1) build program with capabilities similar to the regular make(1) command.
Rake has the following features:
o Rakefiles (Rake's version of Makefiles) are completely defined in standard Ruby syntax. No XML files to edit. No quirky Makefile syntax
to worry about (is that a tab or a space?).
o Users can specify tasks with prerequisites.
o Rake supports rule patterns to synthesize implicit tasks.
o Flexible FileLists that act like arrays but know about manipulating file names and paths.
o A library of prepackaged tasks to make building rakefiles easier.
OPTIONS --version Display the program version.
-C
--classic-namespace
Put Task and FileTask in the top level namespace
-D [PATTERN]
--describe [PATTERN]
Describe the tasks (matching optional PATTERN), then exit.
-E CODE
--execute-continue CODE
Execute some Ruby code, then continue with normal task processing.
-G
--no-system
--nosystem Use standard project Rakefile search paths, ignore system wide rakefiles.
-I LIBDIR
--libdir LIBDIR Include LIBDIR in the search path for required modules.
-N
--no-search
--nosearch Do not search parent directories for the Rakefile.
-P
--prereqs Display the tasks and dependencies, then exit.
-R RAKELIBDIR
--rakelib RAKELIBDIR
--rakelibdir RAKELIBDIR
Auto-import any .rake files in RAKELIBDIR. (default is rakelib )
-T [PATTERN]
--tasks [PATTERN] Display the tasks (matching optional PATTERN) with descriptions, then exit.
-e CODE
--execute CODE Execute some Ruby code and exit.
-f FILE
--rakefile FILE Use FILE as the rakefile.
-h
--help Prints a summary of options.
-g
--system Using system wide (global) rakefiles (usually ~/.rake/*.rake ).
-n
--dry-run Do a dry run without executing actions.
-p CODE
--execute-print CODE
Execute some Ruby code, print the result, then exit.
-q
--quiet Do not log messages to standard output.
-r MODULE
--require MODULE Require MODULE before executing rakefile.
-s
--silent Like --quiet, but also suppresses the 'in directory' announcement.
-t
--trace Turn on invoke/execute tracing, enable full backtrace.
-v
--verbose Log message to standard output (default).
--rules Trace the rules resolution.
SEE ALSO ruby(1)make(1)
http://rake.rubyforge.org/
REPORTING BUGS
Bugs, features requests and other issues can be logged at <http://onestepback.org/redmine/projects/show/rake>.
You will need an account to before you can post issues. Register at <http://onestepback.org/redmine/account/register>. Or you can send an
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AUTHOR
Rake is written by Jim Weirich <jim@weirichhouse.org>
UNIX November 7, 2012 UNIX
05-09-2016
