Re: [ksh93] defunct 'fc' command?

Janis Papanagnou wrote:

I noticed that 'fc' doesn't seem to work on my Limux platform (neither
with ksh93u+ nor with ksh93u+m). Usually I use that built-in command
only as 'fc -l' (to list the history entries), and omitting the '-l'
should execute these commands. Alas, 'fc <from> <to>' doesn't work;
for example
 
$ fc -l 1013 1015
1013 ls X
1014 ls Y
1015 ls Z
$ fc 1013 1015
15
^C
?
^Z[1] + Stopped                  fc 1013 1015
$ kill %%
[1] + Terminated               fc 1013 1015
 
 
Is that an issue in my environment (or on my platform), or a bug?

It's an issue with your expectation. By default, fc starts an editor.
Presumably you don't have FCEDIT set, as your output shows the default
editor (ed) was used; it was ed that wrote the "15" and the "?".

If you just want the commands executed, you can specify an editor
that does nothing:

fc -e true 1013 1015
fc -e : 1013 1015

Or, if you only want to execute one command, you can use -s (without
specifying a substitution).

This is all POSIX standard stuff.

--
Geoff Clare <netnews@gclare.org.uk>