Re: [netrexx-pipelines] Strangeness when filtering linux stty output

[J L. T. <jlt...@ma...>]

On 2023-07-31 06:20:50 Marc Remes wrote:
> On 7/31/23 13:03, Rony G. Flatscher wrote:
> > According to "https://linux.die.net/man/1/stty" "stty --all" would print
> > all settings (to stdout I assume).
>
> True :
>
> $ stty --all
> speed 38400 baud; rows 30; columns 99; line = 0;
> intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>; eol2
> = <undef>; swtch = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R;
> werase = ^W; lnext = ^V; discard = ^O; min = 1; time = 0;
> -parenb -parodd -cmspar cs8 -hupcl -cstopb cread -clocal -crtscts
> -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon
> -ixoff -iuclc -ixany -imaxbel iutf8
> opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0
> ff0 isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop
> -echoprt echoctl echoke -flusho -extproc
> $ echo dog | stty
> stty: 'standard input': Inappropriate ioctl for device
>
> The first command is attached to a terminal (either a 'real' terminal, but
> more likely a pseudo-terminal), and shows its settings. The second
> command's stdin is the stdout of the echo command, and says so..
>
> Also check the tty command:
> $ tty
> /dev/pts/6
> $ echo dog | tty
> not a tty
>
> Marc
>
	But:

| @08:49:08 ─▶leslie@pinto◀─
| wd=~/bin/NetRexx/Pipelines
| $ pipe 'command ls -l|console'
| total 224
| -rw-r--r-- 1 leslie users  3741 Jun 29 01:44 condense.class
| -rw-r--r-- 1 leslie users  1298 Jun 29 00:07 GenSymLinks.class
| -rw-r--r-- 1 leslie users  4688 Jun 28 23:53 GenSymLinks_gensymlinks.class
|    :
| -rw-r--r-- 1 leslie users  2403 Jun 19 15:50 treeOutput.txt
| rc=0

works just fine, whereas

| @08:49:20 ─▶leslie@pinto◀─
| wd=~/bin/NetRexx/Pipelines
| $ pipe 'command stty --all|console'
| rc=0

produces no output.  What is the difference between the stage "command ls -l" 
(which works) and "command stty --all" (which does not)?  We're not doing 
bash redirection here; this is inside the NetRexx pipeline.

Leslie
-- 
Platform: Linux
Distribution: openSUSE Leap 15.4 (x86_64)
java version "19.0.1" 2022-10-18
Java(TM) SE Runtime Environment (build 19.0.1+10-21)
Java HotSpot(TM) 64-Bit Server VM (build 19.0.1+10-21, mixed mode, sharing)
NetRexx portable processor 4.05-beta build 62-20230422-0022