Hi all:
I came across this ingenious way to invoke an awk script from within
a shell script. This is from Dave Taylor's book "Wicked Cool Shell
Scripts" :
#!/usr/bin/env ksh93
# diskspace - summarize available disk space and present in a logical
# and readable fashion
________________________________
# Create a file named available with the suffix being the PID
tempfile="/tmp/available.$$"
trap "rm -f $tempfile" EXIT
cat << 'EOF' > $tempfile
{ sum += $4 }
END { mb = sum / 1024
gb = mb / 1024
printf "%.0f MB (%.2fGB) of available disk space\n", mb, gb
}
EOF
df -k | awk -f $tempfile
exit 0
___________________________
My question is is the statement:
cat << 'EOF' > $tempfile
a "here" document? It sure looks like it. Anyone shed some light on
this for me; thanks.
--
Kind regards,
Jonathan
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