On 20/01/2014 23:12, Robert Millan wrote: > $ for i in $(seq 100) ; do egrep > '^#[[:space:]]*define[[:space:]]+MNT_[A-Z]+[[:space:]]+0x[0-9]+[[:space:]]*' > /usr/src/kfreebsd-headers-10.0-1/sys/sys/mount.h | grep MNT_RDONLY | head -n > 1 ; done | wc -l > 72
Interestingly, when the receiving end of the pipe egrep writes to is not spawned in each iteration, the chance of failure is much lower (but still non-zero): $ for i in $(seq 100) ; do for i in $(seq 100) ; do egrep '^#[[:space:]]*define[[:space:]]+MNT_[A-Z]+[[:space:]]+0x[0-9]+[[:space:]]*' /usr/src/kfreebsd-headers-10.0-1/sys/sys/mount.h ; done | grep MNT_RDONLY | wc -l ; done 100 100 100 100 100 100 100 99 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 99 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 -- Robert Millan -- To UNSUBSCRIBE, email to debian-bsd-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/52dda1d7.7030...@debian.org
