Remove an unneeded 'tail -n 1' from a pipeline
When piping to awk, it's almost always an anti-pattern to use 'grep' first. When not in a pipeline, sometimes it is faster to use tail, as awk must process all the lines in the input stream, and won't 'seek'. In a pipeline, both grep and awk must process all lines, so we might as well skip the extra process creation for tail and just use awk for all the processing. Reviewed by: jilles MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D19441
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=345005
@ -57,7 +57,7 @@ growfs_start ()
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;;
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zfs)
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pool=${FSDEV%%/*}
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rootdev=$(zpool list -v $pool | tail -n 1 | awk '{ print $1 }')
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rootdev=$(zpool list -v $pool | awk 'END { print $1 }')
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;;
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*)
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echo "Don't know how to grow root filesystem type: $FSTYPE"
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