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truncate deleted files from lsof

Terminal - truncate deleted files from lsof
lsof | grep -i deleted | grep REG | grep -v txt | ruby -r 'pp' -e 'STDIN.each do |v| a = v.split(/ +/); puts `:> /proc/#{a[1]}/fd/#{a[3].chop}`; end'
2014-03-11 06:02:09
User: jim80net
Functions: grep
0
truncate deleted files from lsof

Be careful, first run:

lsof | grep -i deleted | grep REG | grep -v txt

Then, give it the boot!

Alternatives

There are 6 alternatives - vote for the best!

Terminal - Alternatives
lsof|gawk '$4~/txt/{next};/REG.*\(deleted\)$/{printf ">/proc/%s/fd/%d\n", $2,$4}'
2014-03-11 10:40:32
User: wejn
Functions: gawk
Tags: awk lsof gawk
1

While the posted solution works, I'm a bit uneasy about the "%d" part. This would be hyper-correct approach:

lsof|gawk '$4~/txt/{next};/REG.*\(deleted\)$/{sub(/.$/,"",$4);printf ">/proc/%s/fd/%s\n", $2,$4}'

Oh, and you gotta pipe the result to sh if you want it to actually trim the files. ;)

Btw, this approach also removes false negatives (OP's command skips any deleted files with "txt" in their name).

Know a better way?

If you can do better, submit your command here.

What others think

Now there are two versions of this command, but neither of you have explained WHY you'd do this.

Deleted doesn't necessarily mean not-in-use.

Lots of programs create then immediately delete temporary files, but keep a handle to them (to continue working).

That means when the program closes, the files automatically disappear.

Comment by flatcap 23 weeks and 2 days ago

Your point of view

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