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Full Discussion: calling a Universe program
Top Forums UNIX for Advanced & Expert Users calling a Universe program Post 302290262 by botao on Sunday 22nd of February 2009 08:20:07 PM
Old 02-22-2009
ya2c (yet another 2 cents)

my 2 cents are about /dev/tty and nohup :

- first, you should consider that some applications "like" (*) to open "/dev/tty" ;

- the simplest test you should perform is to force you command to use "/dev/tty" and see if it satisfies your application ;

- speciffically, if you run a shell script in this fashion :

Code:
$ somescript.sh < /dev/tty > /dev/tty

- then your script should not complain about "tty output"

(*) they really shouldn't ; it's poor programming practice .

- second, nohup has 2 relevant properties :

-- it can't afford /dev/tty communication ;

-- it ignores ".profile" sourcing ;

- those two peculiarities above are responsible for most script execution misfortunes ;

- so if you need to run a script thru nohup, be sure to source your ".profile" explicitly within its first few lines ;

good luck, and success !

alexandre botao
 

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STARTSRV(8)						      System Manager's Manual						       STARTSRV(8)

NAME
startsrv - invoke ttysrv for a particular host. SYNOPSIS
startsrv host DESCRIPTION
startsrv fires up ttysrv for a given host. It will kill any already running instance for that host, then read /etc/remote- tty/opt/<host>.srv for any options to pass to ttysrv (defaulting to those that set 9600,8n1), /etc/remote-tty/prot/<host>.sock for the per- missions the socket should be set to (default 660), /etc/remote-tty/owner/<host>.sock for the owner of the socket (default rttymgr:dialout) and /etc/remote-tty/prot/<host>.log for the permissions of the logfile (default 640). The device node used is /etc/remote-tty/dev/<host>. This will normally be a symlink to the correct file in /dev. ttysrv is configured to log to /var/log/remote-tty/<host>/<host>, with a pidfile at /var/run/remote-tty/pid/<host> and the socket at /var/run/remote-tty/sock/<host>. SEE ALSO
remote-tty(1), ttysrv(8). AUTHOR
rtty was written by Paul Vixie <vixie@isc.org>. This manual page was written by Jonathan McDowell <noodles@earth.li> for the Debian project (but may be used by others). May 23, 2006 STARTSRV(8)
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