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Full Discussion: While loop seems to exit when blank line is met
Top Forums UNIX for Dummies Questions & Answers While loop seems to exit when blank line is met Post 302421992 by dr.house on Monday 17th of May 2010 08:40:15 AM
Old 05-17-2010
Even though read seems to work (for me, that is), you may want to use sed instead (ugly, but possibly more reliable):

Code:
#!/bin/bash

cat test.file | while read LINE
do
  echo $LINE
done

echo "="

LC=$( cat test.file | wc -l )
for (( I=1 ; I<=$LC ; I++ ))
do
  sed -n -e "$I"p test.file
done

exit 0

Code:
[house@leonov] cat test.file
some

text
[house@leonov] bash test.bash
some

text
=
some

text

 

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LEARN ABOUT LINUX

gnomevfs-cat

gnomevfs-cat(1)                                                    User Commands                                                   gnomevfs-cat(1)

NAME

       gnomevfs-cat - print a file to standard output using the VFS system

SYNOPSIS

       gnomevfs-cat URI

DESCRIPTION

       gnomevfs-cat prints a file to standard output using the virtual file system to access the file via a URI.

OPERANDS

       The following operands are supported:

       URI             Specifies the file location in standard URI format.

EXAMPLES

       Example 1: Cat a File From a Web Server

       example% gnomevfs-cat http://www.sun.com

       Example 2: Cat a Local File

       example% gnomevfs-cat file:///home/user/README.txt

ENVIRONMENT VARIABLES

       See environ(5) for descriptions of the following environment variables: NLSPATH.

EXIT STATUS

       The exit value 0 is returned regardless of success or failure.

FILES

       The following files are used by this application:

       /usr/bin/gnomevfs-cat   Executable to print a file to standard output using the VFS system

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWgnome-vfs                |
       +-----------------------------+-----------------------------+
       |Interface stability          |External                     |
       +-----------------------------+-----------------------------+

SEE ALSO

       gnomevfs-copy(1), gnomevfs-info(1), gnomevfs-ls(1), gnomevfs-mkdir(1)

NOTES

       Written by Stephen Browne, Sun Microsystems Inc., 2004.

SunOS 5.10                                                          6 Sep 2004                                                     gnomevfs-cat(1)
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