# Win32: perl -MErrno -e "my %e= map { Errno->$_()=>$_ } keys(%!); print grep !/unknown error/i, map sprintf('%4d %-12s %s'.$/,$_,$e{$_},$!=$_), 0..127" # Other: perl -MErrno -e 'my %e= map { Errno->$_()=>$_ } keys(%!); print grep !/unknown error/i, map sprintf("%4d %-12s %s".$/,$_,$e{$_},$!=$_), 0..127'