Northward Midget Pole to Pole


Stuffing Text Into All Screen Windows

Posted by Quinn

Various pagers have been giving me question marks in boxes and hexadecimal codes.  This is probably because I didn't have the right font in the past and inserted various hacks into my ~/.bash tree to get around them, e.g. aliasing a LANG=C before every perldoc command.

Well, now I've just about got everything right and proper in UTF-8 mode using a uxterm, but those little nigglers still pop up.  Today I did a man less and found the LESSCHARSET environment variable.  Awesome!  But if it's not set, it's supposed to use the locale, and my locale is already properly set up to en_US.utf-8.  Not a problem.  I just export -n LESSCHARSET to un-export the variable.

But I'm in screen, with fourteen windows open.  How do I loop through all screen windows, stuffing a command into each?

Luckily, a quick reading of the screen man page led me to this:

at \# stuff "export -n LESSCHARSET\015source ~/.bash/aliases\015

And BAM that gets stuffed into every window I have open.  Unfortunately, some of those are SQL prompts, log tails, and maybe an open vim session or two, but such are the pitfalls of impatiently trying out a new command, and no harm was done.

The trick is to use the backslash-escaped octothorpe to specify all windows.  The rest is just a normal stuff, with that annoying octal \015 to specify a newline.

Oh, and I added a second command to source my bash aliases, because I'd added new ones recently.