tiny patch to prevent head from closing pipes
swell.k at gmail.com
Sat Aug 28 14:45:32 UTC 2010
Alexander Best <arundel at freebsd.org> writes:
> hi there,
> i just had subversion complain about a broken pipe while piping its output
> through awk straight to head . i decided to add a switch to head which will
> tell it to never close a pipe unless the input has stopped .
You can do same with sh(1), e.g.
$ svn log | (IFS=; while read li; do [ $((i+=1)) -le 10 ] && echo "$li"; done)
$ svn log | (IFS=; while read li && [ $((i+=1)) -le 10 ]; do echo "$li"; done)
svn: Write error: Broken pipe
But I think subversion should
> there's probably a much more efficient way of discarding the input without
> closing the pipe unless the input ceased. it's just a 5 minute hack in order to
> see if people find the idea useful or not. ;)
Can you give an example of usefulness that does not involve subversion?
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