Your original code seems to work fine more-or-less if you just remove the redirection to file descriptor 4 (by doing this you are taking it away from &p) and then use read -p to read the output into a variable, perhaps in a while loop. You can use some logic in the while loop to recognise the line of output you're expecting.
The only problem is... if for some reason it fails to log in, or you don't find the output you're expecting, the while read -p variable loop will block waiting for more input from the pipe, so you'd need some kind of timeout facility (another background process?) to prevent your script running forever.
Try this:
Code:
telnet $HOSTNAME |&
sleep $DELAY
print -p $UNAME
sleep $DELAY
print -p $PWORD
sleep $DELAY
print -p uptime
sleep $DELAY
while read -p UPTIME
do
print "read line:$UPTIME" | cat -vet
if [[ "$UPTIME" = *average:* ]]
then
print found the uptime
break
fi
done
print -p exit
print the uptime is $UPTIME
Hello everybody,
I have a question about I/O redirection within a coprocess.
I want to setup a coprocess and then redirect output to a file on a remote machine.
Here's some Perderabo code modified
exec 4>&1
#
# Section 1 --- Prove that we can talk with the hosts in HOSTLIST
# ... (4 Replies)
I am wracking my brains over this. I am trying to use a Korn Shell script to execute an Oracle PL/SQL procedure, using the Oracle command line interface (sqlplus). The script starts sqlplus in a coprocess, and the two processes communicate using a two-way pipe. The bgnice option is off, so both... (8 Replies)
Hi can any one let me know if awk doesnt work with the coprocess??? I have tried a simple example mentioned below but couldnt get it working seems like awk doesnt work with the coprocess concept. I would appreciate very much for any inputs on this.
exec 4>&1
awk -v count=$COUNT >&4 2>&4 |&... (6 Replies)
Hello,
I'm trying to assign a numeric value that is returned from one of my programs to a variable in tcsh. I want to do:
@ r10 = './my_prog file 35'
where ./my_prog file 35 returns a decimal value, but this doesn't work. How do I achieve the desired result?
Janet (4 Replies)
Hi there,
I want to connect to a Cisco router with a KSH script via coprocess:
telnet 192.168.2.82|&
print -p “login”
print -p "password"
With telnet it works. Now I want to use SSH:
ssh -T -l login 192.168.2.82|&
print -p "password"
The router answer me I enter a bad... (7 Replies)
Hello,
There is pipe chain and I want concacenate piped data with some variable:
balh blah| ... $var1
What command I should use instead ... to concatenate piped output with $var1. I think I coud solve this using temp var - but could it be done in one line like sample above ?
thanks... (4 Replies)
While assisting a forum member, I recommended running SQL/Plus in a coprocess (to make database connections and run a test script) for the duration of his script rather than starting/stopping it once for every row in a file he was processing.
I recalled I made a coprocess example for folks at... (2 Replies)
Hi,
Please help to seprate my /var/adm/messages output. Than i want to take this
output in the excel.
e,g
cat /var/adm/messages
Sep 4 10:16:52 ibsadm1 inetd: vnetd from 172.17.5.20 38353
Sep 4 10:16:52 ibsadm1 inetd: bpcd from 172.17.5.20 915
Sep 4 10:16:55 ibsadm1 inetd: ... (5 Replies)
Hi all,
I have F5 load balancer on my system and checking service status by opening an ftp session in every 30 seconds. These ftp sessions are being logged in /var/adm/wtmpx and filling up the file. when i run the last command most of the output is this ftp session. I was wondering if there is a... (1 Reply)
Hi
I have this command, which counts number of lines in a specific file and then prints it on screen.nawk 'NF{c++}END{print "Number of GPS coordinates in file: "c}' $filename
I would like to have the output put into a variable, but can't seem to find the correct argument for it.
How do I... (3 Replies)
Discussion started by: bulleteyedk
3 Replies
LEARN ABOUT SUSE
uptime
UPTIME(1) User Commands UPTIME(1)NAME
uptime - tell how long the system has been running
SYNOPSIS
uptime [OPTION]... [FILE]
DESCRIPTION
Print the current time, the length of time the system has been up, the number of users on the system, and the average number of jobs in the
run queue over the last 1, 5 and 15 minutes. Processes in an uninterruptible sleep state also contribute to the load average. If FILE is
not specified, use /var/run/utmp. /var/log/wtmp as FILE is common.
--help display this help and exit
--version
output version information and exit
AUTHOR
Written by Joseph Arceneaux, David MacKenzie, and Kaveh Ghazi.
REPORTING BUGS
Report uptime bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
COPYRIGHT
Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
The full documentation for uptime is maintained as a Texinfo manual. If the info and uptime programs are properly installed at your site,
the command
info coreutils 'uptime invocation'
should give you access to the complete manual.
GNU coreutils 7.1 July 2010 UPTIME(1)