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I'm a newbie. I have a question:
The following script is supposed to list the first(oldest) 40 archived directories and remove them one by one, but I do not think it's correct. Seems that it will remove all the directories, not just the 40 mentioned. Please advise.

setenv archiveDir <someArchivePath>
foreach x (`ls -t ${archiveDir}/ | awk 'BEGIN {k=40} {k--; if(k<0) {print $0}}'`)
rm -rf ${archiveDir}/${x}
echo ${archiveDir}/${x}

RE: Need


Actually it does the reverse : skips the first 40 lines and outputs all the following. To output the first 40 lines :

CODE --> command line

# the shortest
master # awk 'NR<=40'

# the fastest
master # awk '1;NR==40{exit}' 


RE: Need

OK. Now it makes sense. Thanks alot for the quick reply.

RE: Need


By the way, the above "fastest" solution is just the fastest Awk way. There is a dedicated tool for this task : head.


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