Re^2: Need help copying "logs" to another file. -- oneliner

Note that the code above is doing roughly the same as:
$ ls /path/*.log | grep -v filename_exclude_pat | xargs grep -h line_include_pat >output.txt

right, but note also that the above is doing roughly the same as (a bit expensive as it process every line of unneeded files even if skip them):


   perl -lne 'next if $ARGV=~/filename_exclude_pat/;print if $_=~/line
+_include_pat/' *.log > output.txt
[download]

There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.

Comment on Re^2: Need help copying "logs" to another file. -- oneliner Download Code

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Re^3: Need help copying "logs" to another file. -- oneliner by haukex (Archbishop) on Mar 29, 2017 at 13:17 UTC
Good point :-) Less expensive: `perl -ne 'INIT{@ARGV=grep{!/filename_exclude_pat/}@ARGV} /line_include +_pat/&&print' /path/*.log >output.txt` [download]	[reply] [d/l]