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Top Forums Shell Programming and Scripting Rsh stops working after a few hundred calls Post 302846265 by olds97_lss on Friday 23rd of August 2013 10:29:32 AM
Old 08-23-2013
Rsh stops working after a few hundred calls

There's probably a better way to do what I'm doing and if so, let me know an alternative.

I have a script that runs rsh for every entry in a txt file to go get the file size off the remote server. I then compare the remote size with a local size.

My script worked fine until recently when I was comparing a large list (600+). After about 400 files, the rsh command returned nothing.

My repeated command would be similar to:
Code:
rsh server1 dir /u2/web/a.jsp 2> /dev/null |awk '{print " ",$5," ",$9}'|tr -s " "

/u2/web/a.jsp would be one of the 600 files I'm getting the size of.

I'm able to continue making it work by putting in a 2 second sleep every 10th file.

Any thoughts as to why and/or possibly any alternatives?

Thank you for your time.

Moderator's Comments:
Mod Comment Use code tags please, see PM.

Last edited by zaxxon; 08-23-2013 at 11:31 AM.. Reason: code tags
 

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RSH(1)							      General Commands Manual							    RSH(1)

NAME
rsh - remote shell SYNOPSIS
rsh [-n] [-l username] host [command] host [-n] [-l username] [command] DESCRIPTION
Rsh connects to the specified host, and executes the specified command. Rsh copies its standard input to the remote command, the standard output of the remote command to its standard output, and the standard error of the remote command to its standard error. Interrupt, quit and terminate signals are propagated to the remote command; rsh normally terminates when the remote command does. The remote username used is the same as your local username, unless you specify a different remote name with the -l option. This remote name must be equivalent (in the sense of rlogin(1)) to the originating account; no provision is made for specifying a password with a com- mand. If you omit command, then instead of executing a single command, you will be logged in on the remote host using rlogin(1). Shell metacharacters which are not quoted are interpreted on local machine, while quoted metacharacters are interpreted on the remote machine. Thus the command rsh otherhost cat remotefile >> localfile appends the remote file remotefile to the localfile localfile, while rsh otherhost cat remotefile ">>" otherremotefile appends remotefile to otherremotefile. OPTIONS
-l username Specify the remote user name. -n Connect standard input of the remote command to /dev/null. Do this if rsh should not inadvertently read from standard input. SEE ALSO
rcp(1), rlogin(1), rhosts(5). BUGS
You cannot run an interactive command (like rogue(6) or vi(1)); use rlogin(1). 4.2 Berkeley Distribution April 29, 1985 RSH(1)
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