Command to redirect console to my tty?

makodarear · #1 (**permalink**) 2 Weeks Ago

Is there a utility built into Solaris that will allow me to see console messages from a tty?

I've done a search and see that this is possible through software like ILOM, but I'm looking for a method to do this with built in utilities.

For example, on AIX, I can use swcons `tty`

jlliagre · #2 (**permalink**) 2 Weeks Ago

Not exactly the same but this is close:

Code:

tail -f /var/adm/messages

If your tty is a real one, you might also try:

Code:

consadm -a $(tty)

incredible · #3 (**permalink**) 2 Weeks Ago

use the dmesg command

jlliagre · #4 (**permalink**) 2 Weeks Ago

Quote:

Originally Posted by incredible

use the dmesg command

This shows the last lines of the message file but doesn't kind of redirect its output as the OP asked for.

makodarear · #5 (**permalink**) 2 Weeks Ago

Quote:

Originally Posted by jlliagre

Not exactly the same but this is close:

Code:

tail -f /var/adm/messages

If your tty is a real one, you might also try:

Code:

consadm -a $(tty)

Unfortunately my tty is not a real device. I am logged in remotely using SSH.

I am managing an application that writes certain messages to console. I don't see them in /var/adm/messages. I think in the simplest form, I am trying to figure out how to access messages written to console, like:

Code:

echo "Hello World" > /dev/console

jlliagre · #6 (**permalink**) 2 Weeks Ago

Your application should use the logger facility instead of directly accessing the console. Anyway, if your application has the /dev/console steadily open, you can figure out what file descriptor it is using using pfiles:

Code:

pfiles $(pgrep application-name)

The console file descriptor (here 22) should appear this way:

Code:

  22: S_IFCHR mode:0620 dev:323,0 ino:4 uid:10001 gid:7 rdev:0,0
      O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE
      /devices/pseudo/cn@0:console

then use truss to display what is written there like this:

Code:

truss -f -w 22 -t !all -p pid

with pid being your application process id.

If that doesn't work, say because /dev/console is open and close immediately, an alternate and interesting way would be using dtrace.

wwwzviadi · #7 (**permalink**) 2 Weeks Ago

not sure but may be this is OK for you...
run tty to check pts number something like this
root@solaris# tty
/dev/pts/5
root@solrais#
after you now tty number you can redirect messages like this way
echo"some message here" > /dev/pts/5

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