Sponsored Content
Full Discussion: KSH, coprocess and SSH
Top Forums Shell Programming and Scripting KSH, coprocess and SSH Post 302319418 by colemar on Monday 25th of May 2009 07:24:32 AM
Old 05-25-2009
A coroutine (two-way pipe) seems to be overkill, since you are not waiting for the remote user/password prompt.
To do such a simple thing a here-document is enough:
Code:
ssh ... << EOT
password
EOT

The problem could be that you send the password too early.
If you are willing to wait for a password prompt then you need a two-way pipe and have to read -p before print -p.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

I/O redirection within a coprocess

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)
Discussion started by: Mugin
4 Replies

2. Shell Programming and Scripting

Korn Shell Coprocess Performance Question

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)
Discussion started by: Mark Puddephat
8 Replies

3. Shell Programming and Scripting

ssh into a shell script (KSH)

Hi all, Just like to ask if it is possible to do the following: 1. Have a shell script that calls ssh username@destinationhost 2. Upon successful verification, we ssh into the destination host and automatically use ksh to run a shell script that resides in the destination host. (Hopefully no... (8 Replies)
Discussion started by: rockysfr
8 Replies

4. Shell Programming and Scripting

awk - coprocess???

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)
Discussion started by: ahmedwaseem2000
6 Replies

5. Shell Programming and Scripting

ssh commands in ksh question

Is there a way to shorten these commands? because this script asks for a password 3 times scp -p /usr/local/bin/${script_name} ${servername$iy]}://usr/local/bin/ ssh ${servernames} /usr/local/bin/${script_name} ssh ${servernames} rm -f /usr/local/bin/${script_name} Basically, I'm creating a... (3 Replies)
Discussion started by: pdtak
3 Replies

6. Shell Programming and Scripting

Get coprocess output into var

This is probably a simple one for the wise. I have just started using a coprocess (first time) in order to facilitate telnet'ing from inside a shell script. It's working, but when I run a remote command I need to get the output into a local variable, but alas my kung-fu is weak. #!... (10 Replies)
Discussion started by: dan-e
10 Replies

7. Shell Programming and Scripting

SQL/Plus in a coprocess example. Also saves query results into shell variables

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)
Discussion started by: gary_w
2 Replies

8. Shell Programming and Scripting

Help with ssh ksh script

Hi, I am trying to figure out a ksh script that i have and i think i found it but not sure. i am having to scp or sftp files from my remote server over 2 others to the destination. i have the rsa keys setup for the servers on my end and the username and password for the final server. ... (3 Replies)
Discussion started by: ksh_beginner
3 Replies

9. Shell Programming and Scripting

Ssh from a ksh returning not found message

Script name is test.ksh I know that that the ssh command is working properly, this can be verified by the value returned in respond variable. It is unique to the remote server _____________________________________________________ respond=$(ssh $remoteHost find... (3 Replies)
Discussion started by: Adagio
3 Replies

10. Shell Programming and Scripting

ksh - keep argument variables after ssh

i have a script that should ssh to different host/server. See below: ./script.ksh var1 var2 var3 case $ser in ser1) depo='appr1' set -A aprrA aprrB ssh ser2 "/home/dir/script.ksh $1 $2 $3" ssh ser3 "/home/dir/script.ksh $1 $2 $3" ssh ser4... (4 Replies)
Discussion started by: erin00
4 Replies
csp_helper(1)							  USER COMMANDS 						     csp_helper(1)

  NAME
      csp_helper - A collection of caspar helper scripts

  SYNOPSIS
      csp_install dir (directory) file (file)

      csp_mkdircp dir (directory) file (file)

      csp_scp_keep_mode h ([user@]host) dir (directory) file (file)

      csp_sucp h ([user@]host) dir (directory) file (file)

  DESCRIPTION
      The  scripts  csp_install,  csp_mkdircp,	csp_scp_keep_mode  and csp_sucp are helpers for caspar(7). These scripts typically are not invoked
      directly, but via a Makefile which uses caspar. See the notes on	csp_PUSH  in  caspar(7)  for  information  on  how  to	link  csp_install,
      csp_scp_keep_mode and csp_sucp to caspar.

  install DESCRIPTION
      csp_install creates the required directory (if needed) and installs the file, preserving timestamps. It uses install(1).

  install EXAMPLES
       csp_INSTALL_OPTIONS='--owner=www-data --group=www-data' 
	csp_INSTALL_MODE=ugo=r 
	csp_install /srv/www index.html

       csp_INSTALL_MODE=u=rwx,go= csp_install /usr/local/sbin mkpasswd

  install ENVIRONMENT
      csp_install honors csp_INSTALL_OPTIONS and csp_INSTALL_MODE (default is u=rw,go=r).

  mkdircp DESCRIPTION
      csp_mkdircp calls mkdir(1) and cp(1).

  scp_keep_mode DESCRIPTION
      csp_scp_keep_mode  uses  ssh to copy a file to a remote host, keeping its file permission mode. The trick used is a combination of mktemp(1)
      and mv(1).  Useful if you'd like to be sure a file gets installed e.g. group writable, without fiddling with permission bits on  the  remote
      host.

  scp_keep_mode EXAMPLE
	chmod g+w rc
	csp_scp_keep_mode root@gandalf /etc/uruk rc

  scp_keep_mode ENVIRONMENT
      csp_scp_keep_mode honors csp_SSH ("ssh" by default).

  sucp DESCRIPTION
      csp_sucp calls cat(1) from within sudo(1) from within ssh(1). This allows one to copy files to accounts on hosts one can only reach by call-
      ing sudo on the ssh-reachable remote host.

      Typically, one wants to install a root-owned file, but one does not want to allow access to the root-account directly  from  ssh.  Typically
      sudo is used as an extra line of defense.

  sucp EXAMPLES
      Some examples:

	csp_sucp rms@bilbo /etc fstab

	csp_sucp monty-python commit/ trailer.txt

  sucp BUGS
      If  NOPASSWD  is	not  set in the sudoers(5) file, and one's timestamp is expired, csp_sucp will forward the sudo password prompt. The given
      password will be echoed on the console!

  AUTHOR
      Joost van Baal-Ili

  SEE ALSO
      caspar(7) The caspar homepage is at http://mdcc.cx/caspar/ .

  csp_helper 20120514						      14 mai 2012						       csp_helper(1)
All times are GMT -4. The time now is 02:03 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy