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Full Discussion: The loop does not run as expected
Top Forums Shell Programming and Scripting The loop does not run as expected Post 302078537 by nir_s on Sunday 2nd of July 2006 07:44:19 AM
Old 07-02-2006
I found the problem but I didn't find a solution.
The loop is OK. The problem is that the function exit from the operation after "rsh" command and does not continue to the next iteration.

I wrote the following testing program:
Code:
#! /bin/ksh

CONF_FILE=nir.conf
export $(< $CONF_FILE)
run_install_sr()
{
cat ${CONF_FILE} | grep INSTALL_SR_ | grep :Y | while read line
do
  INSTALL_SR_DIR=`echo $line | cut -d= -f2 | cut -d: -f1`

  echo Install SR directory is $INSTALL_SR_DIR
  rsh ${DB_HOST_NAME} hostname 
done
}

nir.conf content is:
Code:
DB_HOST_NAME=tornado
INSTALL_SR_1=/home/Upgrade_4.7.1/Utilities/Install_SR:Y
INSTALL_SR_2=/home/Upgrade_4.7.2/Utilities/Install_SR:Y
INSTALL_SR_3=/home/Upgrade_4.8/Utilities/Install_SR:Y
INSTALL_SR_4=/home/Upgrade_4.8.1/Utilities/Install_SR:Y

When I run the script I get the following output:
Code:
tornado:> ./nir.ksh 
Install SR directory is /home/Upgrade_4.7.1/Utilities/Install_SR
tornado

If I remark the rsh command in the script ,I get the following output:
Code:
tornado:> ./nir.ksh 
Install SR directory is /home/Upgrade_4.7.1/Utilities/Install_SR
Install SR directory is /home/Upgrade_4.7.2/Utilities/Install_SR
Install SR directory is /home/Upgrade_4.8/Utilities/Install_SR
Install SR directory is /home/Upgrade_4.8.1/Utilities/Install_SR

As you can see,the loop works fine and the problem is with the rsh command - the function is getting out from the loop after the first iteration instead of continuing to the next iteration.

Any ideas?

Thanks in advance,
Nir
 

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install-mh

INSTALL-MH(8)                                                        [nmh-1.5]                                                       INSTALL-MH(8)

NAME

       install-mh - initialize the nmh environment

SYNOPSIS

       /usr/lib/mh/install-mh [-auto] [-check] [-version] [-help]

DESCRIPTION

       Install-mh  is  the  nmh program to create the initial setup for a first-time nmh user.  Install-mh lives in two places for historical rea-
       sons.

       The -auto option does things as automatically as possible and makes install-mh less chatty.

       The user is asked for the name of the directory that will be designated as the user's nmh directory.  If this directory does not exist, the
       user  is  asked  if  it should be created.  Normally, this directory should be under the user's home directory, and has the default name of
       ``Mail''.  Install-mh writes an initial .mh_profile for the user.

       As with all nmh commands, install-mh first checks for the existence of the $MH environment variable since that gives the  profile  path  if
       set.   If  it isn't set, the $HOME environment variable is consulted to determine the user's home directory.  If $HOME is not set, then the
       /etc/passwd file is consulted.

       When creating the users initial .mh_profile, install-mh will check for the existence of a global profile  /etc/nmh/mh.profile.   If  found,
       this will be used to initialize the new .mh_profile.

       The  -check  option can be used to check whether or not nmh has been installed.  This can be used by other programs to determine whether or
       not nmh has been installed without their having to know the internals of nmh.

FILES

       $HOME/.mh_profile          The user profile
       /etc/nmh/mh.profile        Used to initialize user profile

PROFILE COMPONENTS

       Path:                To set the user's nmh directory

CONTEXT

       With -auto, the current folder is changed to "inbox".

MH.6.8                                                             11 June 2012                                                      INSTALL-MH(8)
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