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Full Discussion: Inputting multiple files into one command
Top Forums Shell Programming and Scripting Inputting multiple files into one command Post 302835065 by newbie2010 on Sunday 21st of July 2013 04:52:39 PM
Old 07-21-2013
Inputting multiple files into one command
I am trying to read 30 files into a command. The first file contains 10 lines and goes into this part of the command as "x"

/tmp/filearrange.sh $x

The group of files (20 files, I call them variable $i) need to be the second argument in the command and they need to be read so that they are paired with the other command.

So each line is read one at a time, example
Code:
invfile contents (variable x)     20 files (these files are separate files) ($filex)
inventory-usage-4                  inventory.txt
inventory-usage-3                  shelflist.txt
inventory-usage-4                  stocklist.txt
etc                                           etc,  up to 20 files

So
Code:
/tmp/filearrange.sh $x  -add $filex

looks like this (example)

/tmp/filearrange.sh inventory-usage-4 -add inventory.txt
/tmp/filearrange.sh inventory-usage-3 -add shelflist.txt

What I have tried so far is to use paste but it takes only 12 lines. Then I tried filedescriptors, but it appears I would need to use as input a variable to the file descriptor like this:

Code:
exec 3<$filex
where filex= `cat /tmp/*.txt`

and I can't get this working.


Code:
while read i && read x<&3
do
  /tmp/filearrange.sh "$i" -add -f "$filex"
done < /tmp/ exec 3<$filex

I'm really confused about this in bash. Any help is appreciated.
Last edited by Scrutinizer; 07-21-2013 at 06:14 PM..
 

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LEARN ABOUT CENTOS

dh_ucf

DH_UCF(1)							     Debhelper								 DH_UCF(1)

NAME

       dh_ucf - register configuration files with ucf

SYNOPSIS

       dh_ucf [debhelperoptions] [-A] [-n] [file...]

DESCRIPTION

       dh_ucf is a debhelper program that is responsible for generating the postinst and postrm commands that register files with ucf(1) and
       ucfr(1).

FILES

       debian/package.ucf
	   List pairs of source and destination files to register with ucf. Each pair should be put on its own line, with the source and
	   destination separated by whitespace. Both source and destination must be absolute paths. The source should be a file that is provided
	   by your package, typically in /usr/share/, while the destination is typically a file in /etc/.

	   A dependency on ucf will be generated in ${misc:Depends}.

OPTIONS

       -A, --all
	   Install all files specified by command line parameters in ALL packages acted on.

       -n, --no-scripts
	   Do not modify postinst/postrm scripts. Turns this command into a no-op.

       file ...
	   Install these info files into the first package acted on. (Or in all packages if -A is specified).

NOTES

       Note that this command is not idempotent. dh_prep(1) should be called between invocations of this command. Otherwise, it may cause multiple
       instances of the same text to be added to maintainer scripts.

SEE ALSO

       debhelper(7)

       This program is a part of debhelper.

AUTHOR

       Joey Hess <joeyh@debian.org> Jeroen Schot <schot@a-eskwadraat.nl>

11.1.6ubuntu2							    2018-05-10								 DH_UCF(1)
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