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dontkill: i/o redirections, how do they work?

--- a/rc/bin/dontkill

+++ b/rc/bin/dontkill

@@ -9,6 +9,6 @@

 psu | awk '$NF ~ /'$1'/ {

 c="/proc/"$2"/ctl"

 print "chmod +w "c

-print "echo noswap >"c

+print "@{echo noswap >"c"}"

 print "chmod -w "c

 }' | rc >/dev/null >[2=1]