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Full Discussion: Redirect string from bash stderr to user stdin
Top Forums Shell Programming and Scripting Redirect string from bash stderr to user stdin Post 302998244 by Don Cragun on Saturday 27th of May 2017 10:18:00 PM
Old 05-27-2017
As has been said before, your request is not at all clear. If you would show us the output produced by command to its standard output and to its standard error and show us the output you are trying to produce, we would have a much better chance of helping you.

If you're saying that you want a bash script that you have named command is to read its own standard error output as part of its input, it might be impossible or it might be trivial depending on what your script is trying to do. If this is the case, we need to see the code in your script; not the way you are currently trying to invoke it. (And, the comments in your script had better be extremely clear about where the feedback loop is and what it is trying to do.)

Note that there is also a standard utility named command. Are you sure that you are invoking your script instead of the standard command utility??? The command utility is a shell built-in in bash, ksh, and many other shells based on Bourne shell syntax.
 

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LEARN ABOUT PHP

libbash

LIBBASH(7)							  libbash Manual							LIBBASH(7)

NAME

     libbash -- A bash shared libraries package.

DESCRIPTION

     libbash  is  a package that enables bash dynamic-like shared libraries. Actually its a tool for managing bash scripts whose functions you may
     want to load and use in scripts of your own.

     It contains a 'dynamic loader' for the shared libraries ( ldbash(1)), a configuration tool (ldbashconfig(8)), and some libraries.

     Using ldbash(1) you are able to load loadable bash libraries, such as getopts(1) and hashstash(1).  A bash shared library that can be  loaded
     using
     ldbash(1) must answer 4 requirments:

     1.     It must be installed in $LIBBASH_PREFIX/lib/bash (default is /usr/lib/bash).

     2.     It must contain a line that begins with '#EXPORT='.  That line will contain (after the '=') a list of functions that the library
	    exports.  I.e. all the function that will be usable after loading that library will be listed in that line.

     3.     It must contain a line that begins with '#REQUIRE='.  That line will contain (after the '=') a list of bash libraries that are
	    required for our library.  I.e. every bash library that is in use in our bash library must be listed there.

     4.     The library must be listed (For more information, see ldbashconfig(8)).

   Basic guidelines for writing library of your own:
     1.     Be aware, that your library will be actually sourced. So, basically, it should contain (i.e define) only functions.

     2.     Try to declare all variables intended for internal use as local.

     3.     Global variables and functions that are intended for internal use (i.e are not defined in '#EXPORT=') should begin with:
		  __<library_name>_
	    For example, internal function myfoosort of hashstash library should be named as
		  __hashstash_myfoosort
	    This helps to avoid conflicts in global name space when using libraries that come from different vendors.

     4.     See html manual for full version of this guide.

AUTHORS

     Hai Zaar <haizaar@haizaar.com>
     Gil Ran <ril@ran4.net>

SEE ALSO

     ldbash(1), ldbashconfig(8), getopts(1), hashstash(1) colors(1) messages(1) urlcoding(1) locks(1)

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