AIX notes
I needed a command line way that I could summarize the currently mounted disk space for a bunch of AIX boxes. I suspect this (or something very similar would work for other Unix flavors): df -g | awk '{print $2}' | grep -E "^[0-9\.]+$" | perl -e '@BIGAR=; foreach (@BIGAR) { chomp;} print STDOUT join ("+",@BIGAR) . "\n"; ' | bc -l Commercial AIX compiler with extra debugging: make with: CFLAGS=\"-v -V -qsrcmsg -qreport" CC="xlc_r -qfullpath -g -qdbxextra" debug core with: dbx -E LD_LIBRARY_PATH=/usr/opt/perl5/freetds/lib /usr/opt/perl5/netcool/bin/perl (dbx) where