> On 12 Mar 2019, at 12:14, Trond Endrestøl > <[email protected]> wrote: >> An alternative sort approach, which handles df arguments which change the >> number of columns, and only invokes df once: >> >> ${DF} "$@" | awk '/^Filesystem/ { print; sort = "sort -k " NF } ! >> /^Filesystem/ { print | sort }’ > > Well, yes and no, mostly no. > > Why are we feeding each line from df(1) separately to sort(1)? > It defeats the entire purpose. No sorting takes place. > > We might be better off accumulating the majority of the lines and > sorting them in an END block.
That’s not how awk works. It maintains a pipe and feeds each line to the same sort process. There is another bug there, of course. The field number should be (NF - 1) because of the space in the “Mounted on” header on the last column. That’s what I get for just typing code into an email. Regards, Jan M. _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "[email protected]"
