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Full Discussion: Bash script does not work as expected
Top Forums UNIX for Beginners Questions & Answers Bash script does not work as expected Post 303034882 by MadeInGermany on Wednesday 8th of May 2019 03:47:51 PM
Old 05-08-2019
The following appends even the first line as a new line, so the initial empty string becomes an empty line:
Code:
 note=""
 while [ "$not" != "==================================" ]; do
  read not
  note="$note
$not"
 done

You must either branch on a state variable (e.g. $firstrun), or use the "$separator variable" trick as follows:
Code:
 note="" sep=""
 while
  read not &&
  [ "$not" != "==================================" ]
 do
  note="$note$sep$not"
  sep="
"
 done

EDIT: I have changed the oder of read and [ ]. Otherwise one must initialize not="" (or it might have the value from a previous cycle).
Last edited by MadeInGermany; 05-09-2019 at 04:26 AM..
 

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LEARN ABOUT CENTOS

bashbug

BASHBUG(1)						      General Commands Manual							BASHBUG(1)

NAME

       bashbug - report a bug in bash

SYNOPSIS

       bashbug [--version] [--help] [email-address]

DESCRIPTION

       bashbug	is  a shell script to help the user compose and mail bug reports concerning bash in a standard format.	bashbug invokes the editor
       specified by the environment variable EDITOR on a temporary copy of the bug report format outline. The user must fill  in  the  appropriate
       fields  and  exit  the  editor.	 bashbug  then	mails the completed report to bug-bash@gnu.org, or email-address.  If the report cannot be
       mailed, it is saved in the file dead.bashbug in the invoking user's home directory.

       The bug report format outline consists of several sections.  The first section provides information about the  machine,	operating  system,
       the  bash  version, and the compilation environment.  The second section should be filled in with a description of the bug.  The third sec-
       tion should be a description of how to reproduce the bug.  The optional fourth section is for a proposed fix.  Fixes are encouraged.

ENVIRONMENT

       bashbug will utilize the following environment variables if they exist:

       EDITOR Specifies the preferred editor. If EDITOR is not set, bashbug defaults to emacs.

       HOME   Directory in which the failed bug report is saved if the mail fails.

       TMPDIR Directory in which to create temporary files and directories.

SEE ALSO

       bash(1)

AUTHORS

       Brian Fox, Free Software Foundation
       bfox@gnu.org

       Chet Ramey, Case Western Reserve University
       chet@po.cwru.edu

GNU Bash-4.0							   1998 July 30 							BASHBUG(1)
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