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Full Discussion: nested read
Top Forums Shell Programming and Scripting nested read Post 48402 by TioTony on Friday 5th of March 2004 01:18:00 PM
Old 03-05-2004
nested read

I am hoping someone can help me with this one.

I am writing a ksh script on Solaris. I want to read in host names and some other info from a file, do an "rsh host 'shutdown'" (or any uname for now until I get it working), and then be given some options. The problem is I am using while read LINE do with a nested read like this:


Code:
cat hosts.lst | while read LINE
do
   set ${LINE}
   rsh ${1} 'uname -a'
   DONE=false
   while [[ ${DONE} = false ]]
   do
      echo "[C]heck, [K]ill, [G]o?"
      read ANSWER
      ANSWER=`echo ${ANSWER} | tr -s '[:lower:]' '[:upper:]'`
      echo "ANSWER is ${ANSWER}"
      case ${ANSWER} in
         C ) check_running_processes;;
         K ) kill_running_processes;;
         G ) DONE=true;; #go to next priority
       esac
   done

This isn't the entire script just the section I am having problems with. The problem I cannot get around is when I try to "read ANSWER", $ANSWER is getting the value of $LINE for that iteration. I understand why this is happening but cannot figure out how to get around it.

I have tried putting the read in (), in a separate subroutine, unsetting $LINE, setting $LINE to something else.

Any other ideas?

Thanks,
Tony
 

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RNANO(1)						      General Commands Manual							  RNANO(1)

NAME
rnano - Restricted mode for Nano's ANOther editor, an enhanced free Pico clone SYNOPSIS
rnano [OPTIONS] [[+LINE,COLUMN] FILE]... DESCRIPTION
This manual page briefly documents the rnano command. nano is a small, free and friendly editor which aims to replace Pico, the default editor included in the non-free Pine package. Rather than just copying Pico's look and feel, nano also implements some missing (or disabled by default) features in Pico, such as "search and replace" and "go to line and column number". rnano is a restricted version of nano, which only edits specific files and doesn't allow the user access to the filesystem or a command shell. In restricted mode, nano will not: o read or write to any file not specified on the command line; o read any nanorc files; o allow suspending; o allow a file to be appended to, prepended to, or saved under a different name; o use backup files or spell checking. OPTIONS
+LINE,COLUMN Places cursor at line number LINE and column number COLUMN (at least one of which must be specified) on startup, instead of the default of line 1, column 1. -? Same as -h (--help). -h (--help) Show a summary of command line options and exit. -V (--version) Show the current version number and exit. See the nano(1) manpage for the complete documentation of nano. BUGS
Please send any comments or bug reports to nano@nano-editor.org. The nano mailing list is available from nano-devel@gnu.org. To subscribe, email to nano-devel-request@gnu.org with a subject of "subscribe". HOMEPAGE
http://www.nano-editor.org/ AUTHOR
Chris Allegretta <chrisa@asty.org>, et al (see AUTHORS for details). This manual page was originally written by Thijs Kinkhorst <thijs@kinkhorst.com>, for the Debian system (but may be used by others). August 23, 2007 version 2.0.0 RNANO(1)
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