tail/head not working with a pseudoterminal

[Costin Caraivan]

Hello,

I'm trying to tail a file through SSH. I'm launching ssh through
Python, like this:
ssh -t ***@vm-admin.corp.com "tail
/cygdrive/c/ctier/ctl/var/logs/ctlcenter/STAGING/Administration/\[Staging\]\
Sleep/7.txt"

And I get this:
Pseudo-terminal will not be allocated because stdin is not a terminal.
TAIL: lseeki64() failed 22

This works from the command line :(

Also head fails with:
Pseudo-terminal will not be allocated because stdin is not a terminal.
bash: /cygdrive/c/apps/activeperl/bin/head: /usr/bin/perl: bad
interpreter: Permission denied

This also works from the command line :(

The Cygwin version is: CYGWIN_NT-6.0-WOW64 1.7.9(0.237/5/3) 2011-03-29 10:10

Any ideas?

Thanks,
_____________
Costin Caraivan

[Corinna Vinschen]

Post by Costin Caraivan
Hello,
I'm trying to tail a file through SSH. I'm launching ssh through
/cygdrive/c/ctier/ctl/var/logs/ctlcenter/STAGING/Administration/\[Staging\]\
Sleep/7.txt"
Pseudo-terminal will not be allocated because stdin is not a terminal.
TAIL: lseeki64() failed 22

This is not Cygwin's tail. The error message looks pretty weird.

Try ssh -tt.

Post by Costin Caraivan
This works from the command line :(
Pseudo-terminal will not be allocated because stdin is not a terminal.
bash: /cygdrive/c/apps/activeperl/bin/head: /usr/bin/perl: bad
interpreter: Permission denied

You're running the wrong head command. This is some activestate perl
script, not the Cygwin head tool from coreutils. Change your $PATH
to find the Cygwin apps first.


Corinna

[Csaba Raduly]

...

Post by Costin Caraivan
Pseudo-terminal will not be allocated because stdin is not a terminal.
bash: /cygdrive/c/apps/activeperl/bin/head: /usr/bin/perl: bad
interpreter: Permission denied

You're running the wrong head command.  This is some activestate perl
script, not the Cygwin head tool from coreutils.  Change your $PATH
to find the Cygwin apps first.

It's HEAD from lwp-request:
http://search.cpan.org/~gaas/libwww-perl-6.03/bin/lwp-request

Found unfortunately due to case-insensitive NTFS.

Costin, try /usr/bin/head explicitly.

Csaba

[Costin Caraivan]

Post by Csaba Raduly
http://search.cpan.org/~gaas/libwww-perl-6.03/bin/lwp-request
Found unfortunately due to case-insensitive NTFS.
Costin, try /usr/bin/head explicitly.
Csaba

Thanks, that should do it.

I see one path when connecting manually with SSH, and another one when
launching SSH from Python :-(
_____________
Costin Caraivan