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You're replying to a comment by Peter Krumins.
Sydney, thanks for your question.
I see a couple of mistakes here. First of all you are using grep twice! Awk can do what grep does itself with the /.../ regex pattern matching.
Here is what I came up with (works in GNU Awk only!):
df -h | awk '/dev/ { if (strtonum($5) >= 20) { print $NF ": " $(NF-1) } }'
And this one works in all Awk's:
df -h | awk '/dev/ { if (match($5, /^[0-9]+/)) { usage = substr($5, RSTART, RLENGTH) if (usage >= 20) { print $NF ": " $(NF-1) } } }'
Hope it helps.
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Sydney, thanks for your question.
I see a couple of mistakes here. First of all you are using grep twice! Awk can do what grep does itself with the /.../ regex pattern matching.
Here is what I came up with (works in GNU Awk only!):
And this one works in all Awk's:
Hope it helps.
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