/usr/share/doc/gawk/examples/network/urlchk.awk is in gawk 1:4.1.4+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | BEGIN {
if (ARGC != 2) {
print "URLCHK - check if URLs have changed"
print "IN:\n the file with URLs as a command-line parameter"
print " file contains URL, old length, new length"
print "PARAMS:\n -v Proxy=MyProxy -v ProxyPort=8080"
print "OUT:\n same as file with URLs"
print "JK 02.03.1998"
exit
}
URLfile = ARGV[1]; ARGV[1] = ""
if (Proxy != "") Proxy = " -v Proxy=" Proxy
if (ProxyPort != "") ProxyPort = " -v ProxyPort=" ProxyPort
while ((getline < URLfile) > 0)
Length[$1] = $3 + 0
close(URLfile) # now, URLfile is read in and can be updated
GetHeader = "gawk " Proxy ProxyPort " -v Method=\"HEAD\" -f geturl.awk "
for (i in Length) {
GetThisHeader = GetHeader i " 2>&1"
while ((GetThisHeader | getline) > 0)
if (toupper($0) ~ /CONTENT-LENGTH/) NewLength = $2 + 0
close(GetThisHeader)
print i, Length[i], NewLength > URLfile
if (Length[i] != NewLength) # report only changed URLs
print i, Length[i], NewLength
}
close(URLfile)
}
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