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awk, ENVIRON usage

awk, ENVIRON usage

awk, ENVIRON usage

can it be used with ENVIRON instead of -v?

# free=50
# size=60
# awk -va=${free} -vb=${size} 'BEGIN{printf "%3.2f\n", a/b*100}'
# awk 'BEGIN{printf "%3.2f\n", $ENVIRON["free"]/$ENVIRON["size"]*100}'
awk: 0602-562 Field $() is not correct.
The source line number is 1.

RE: awk, ENVIRON usage


The $ sigil denotes a field. So $ENVIRON["free"] is actually $50 in this case. Just remove those $ signs.

( By the way, the free and size environment variables were exported, right ? They need to be, if you want subsequent processes to see them. )


RE: awk, ENVIRON usage

thank you, indeed works now
# awk 'BEGIN{printf "%3.2f\n", ENVIRON["free"]/ENVIRON["size"]*100}'

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