Friday April 01, 2005 Random ramblings
Friday April 01, 2005 Jason Salkeld blogged about how to find the package a file belongs to and included this command:
grep /usr/sbin/fuser /var/sadm/install/contents | awk '$2 ~ /^f$/ {print $NF}'
Two problems:
- as someone else already noted, grep piped to awk is redundant.
- Using a regex for an absolute match on a field is overkill
The following would be more efficient (well, notionally at least... ;) ):
awk '$1 == "/usr/sbin/fuser" && $2 == "f" { print $NF }' /var/sadm/install/contents
Note that the above assumes that awk is either a shell alias for or that the executable is a symlink to either GNU Awk or nawk. (GNU Awk appears to be the more efficient of the two, for this command at least).
( Apr 01 2005, 07:00:35 PM IST ) Permalink Comments [0]
Trackback URL: http://blogs.sun.com/paulj/entry/awk_pedantry1
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