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Full Discussion: $(< file ) and $( cat file )
Top Forums Shell Programming and Scripting $(< file ) and $( cat file ) Post 303012386 by jlliagre on Saturday 3rd of February 2018 05:29:50 AM
Old 02-03-2018
Quote:
Originally Posted by ctsgnb
This brings me to the question :
Does the special case $(<filename) support only and strictly 1 file ?
Passing more than one file to the redirection wont be interpreted that way, the second file will just be understood as a command name.
Code:
$(< file1 file2)

Using more than one redirection lead to undefined behavior.
Code:
$(< file1 <file2)

- ksh ignores all redirections but the first one, i.e. output file1. It doesn't check file2 for readability/existence.

- bash silently ignores the whole command, i.e. output nothing, however, it returns an error if file1 or file2 isn't readable (or doesn't exists)
This User Gave Thanks to jlliagre For This Post:
ctsgnb
 

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LEARN ABOUT DEBIAN

gpe-question

GPE-QUESTION(1) 						   gpe-question 						   GPE-QUESTION(1)

NAME

       gpe-question - GPE interface for asking questions from shell scripts.

SYNOPSIS

       gpe-question [---icon] name {--question "Question text"} {--buttons icon1:text1} [icon2:text2 ...]

DESCRIPTION

       This manual page was written for the Debian(TM) distribution because the original program does not have a manual page.

       gpe-question provides dialogues to raise a question within the GPE Palmtop Environment with cancel and ok buttons.

OPTIONS

       --question STRING
	  The question to ask the user via the dialogue.

       --buttons type:label
	  The type and label of the button(s) to be shown. Repeat for additional buttons.

EXAMPLES

       gpe-question "test" --question "Do you want to check first?"  --buttons YES:yes NO:no

AUTHOR

       This manual page was written by Neil Williams <codehelp@debian.org> for the Debian(TM) system (but may be used by others). Permission is
       granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version
       published by the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.

AUTHOR

       Moray Allen
	  Author.

COPYRIGHT

       Copyright (C) 2007 Neil Williams

Debian 1							 January 16, 2007						   GPE-QUESTION(1)
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