On Sat, 2 Oct 2010, Miroslav Lachman wrote:
> Date: Sat, 02 Oct 2010 21:58:27 +0200 > From: Miroslav Lachman <000.f...@quip.cz> > To: freebsd-stable <freebsd-stable@freebsd.org> > Subject: is there a bug in AWK on 6.x and 7.x (fixed in 8.x)? > > I think there is a bug in AWK in base of FreeBSD 6.x and 7.x (tested on 6.4 > i386 and 7.3 i386) > > I have this simple test case, where I want 2 columns from GeoIP CSV file: > > awk 'FS="," { print $1"-"$2 }' GeoIPCountryWhois.csv > > It should produce output like this: > > # awk 'FS="," { print $1"-"$2 }' GeoIPCountryWhois.csv | head -n 5 > "1.0.0.0"-"1.7.255.255" > "1.9.0.0"-"1.9.255.255" > "1.10.10.0"-"1.10.10.255" > "1.11.0.0"-"1.11.255.255" > "1.12.0.0"-"1.15.255.255" > > (above is taken from FreeBSD 8.1 i386) > > On FreeBSD 6.4 and 7.3 it results in broken first line: > > awk 'FS="," { print $1"-"$2 }' GeoIPCountryWhois.csv | head -n 5 > "1.0.0.0","1.7.255.255","16777216","17301503","AU","Australia"- > "1.9.0.0"-"1.9.255.255" > "1.10.10.0"-"1.10.10.255" > "1.11.0.0"-"1.11.255.255" > "1.12.0.0"-"1.15.255.255" > Are you sure the command above contains a valid variable assignment? The following works on both 7.3-STABLE and 8.1-STABLE $ awk -v FS="," '{ print $1"-"$2; }' GeoIPCountryWhois.csv | head -n 5 "1.0.0.0"-"1.7.255.255" "1.9.0.0"-"1.9.255.255" "1.10.10.0"-"1.10.10.255" "1.11.0.0"-"1.11.255.255" "1.12.0.0"-"1.15.255.255" The following works as well $ awk '{ print $1"-"$2; }' FS="," GeoIPCountryWhois.csv | head -n 5 "1.0.0.0"-"1.7.255.255" "1.9.0.0"-"1.9.255.255" "1.10.10.0"-"1.10.10.255" "1.11.0.0"-"1.11.255.255" "1.12.0.0"-"1.15.255.255" Or, using a BEGIN section for assignment... $ awk 'BEGIN {FS=","} { print $1"-"$2 }' GeoIPCountryWhois.csv | head -n 5 "1.0.0.0"-"1.7.255.255" "1.9.0.0"-"1.9.255.255" "1.10.10.0"-"1.10.10.255" "1.11.0.0"-"1.11.255.255" "1.12.0.0"-"1.15.255.255" As a side note, gawk shows the following output on 7-STABLE and 8-STABLE $ gawk 'FS="," { print $1"-"$2 }' GeoIPCountryWhois.csv | head -n 5 "1.0.0.0","1.7.255.255","16777216","17301503","AU","Australia"- "1.9.0.0"-"1.9.255.255" "1.10.10.0"-"1.10.10.255" "1.11.0.0"-"1.11.255.255" "1.12.0.0"-"1.15.255.255" ... which means the new behaviour of awk on 8-STABLE seems to break compatibility with gawk at that point. -- Damian _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"