[arch-general] Impossible redirect console buffer to log

[Chris Billington]

The program could also explicitly be modifying its behaviour based on
whether stdout is a tty or not. You can trick it into thinking its stdout
is a tty with the program 'unbuffer'. For example:

[bilbo:~]$ python -c 'import sys; print(sys.stdout.isatty())' | cat
False
[bilbo:~]$ unbuffer python -c 'import sys; print(sys.stdout.isatty())' | cat
True

So you might try:

unbuffer /usr/local/bin/CCcam -d > file


On Fri, Mar 1, 2019 at 1:04 PM Maykel Franco <maykeldebian at gmail.com> wrote:

> El vie., 1 mar. 2019 a las 19:01, Chris Billington
> (<chrisjbillington at gmail.com>) escribió:
> >
> > Perhaps the program writes its log to stderr, and not to stdout?
> >
> > If so, you can redirect both stdout and stderr to file with:
> >
> > command &> out
> >
> >
> >
> > On Fri, Mar 1, 2019 at 12:47 PM Maykel Franco via arch-general <
> arch-general at archlinux.org> wrote:
> >>
> >> HI, I playing with cccam for a proyect with decoder and I like stdout
> >> console log to specific log but not work...
> >>
> >> I try all:
> >>
> >> >> /var/log/test.log
> >>
> >> tee -a /var/log/test.log
> >>
> >> strace -p pid
> >>
> >> The command is:
> >>
> >> /usr/local/bin/CCcam -d
> >> 18:43:15.717 CCcam:
> >> ======================================================================
> >> 18:43:15.717 CCcam: starting CCcam
> >> ======================================================================
> >> 18:43:15.717 CCcam: online using nodeId 91dd747775a31f66
> >> 18:43:15.735 CCcam: create 1 cam device(s)
> >> 18:43:15.739 CCcam: readKeyfile: cannot open /var/keys/SoftCam.Key or
> not found
> >> 18:43:15.739 CCcam: readKeyfile: cannot open /var/keys/AutoRoll.Key or
> not found
> >> 18:43:15.739 CCcam: static cw not found or bad
> >> 18:43:15.746 CCcam: parsed 11522 entries from /var/etc/CCcam.prio
> >> 18:43:15.747 CCcam: added 1005 provider names from
> /var/etc/CCcam.providers
> >> 18:43:15.798 CCcam: added 11097 channel names from
> /var/etc/CCcam.channelinfo
> >> 18:43:15.798 CCcam: server started on port 47015
> >>
> >>
> >>
> >> The binary program is:
> >>
> >> /usr/local/bin/CCcam: ELF 64-bit LSB executable, x86-64, version 1
> >> (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2,
> >> for GNU/Linux 2.6.32, BuildID[sha1]=6ab44025c0a35a3
> >> 83d63f30e96e489f29df424b5, stripped
> >>
> >>
> >> I've tried everything, I do not know what to do to have that output
> >> write it to log.
> >>
> >> I've tried inclusy with tty, pts but it's impossible.
> >>
> >> Does somebody knows why it could be? with any other command / program
> works well
> >>
> >> with the only thing that I have managed to write to log is add:
> >>
> >> | stdbuf -oL
> >>
> >> but the program closes
>
> Thanks for your reply.
>
> Not works... I probe all combinations:
>
> > file redirects stdout to file
> 1> file redirects stdout to file
> 2> file redirects stderr to file
> &> file redirects stdout and stderr to file
>
> Not work...
>