For loop and read from different directories Post: 303001379

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Top Forums Shell Programming and Scripting For loop and read from different directories Post 303001379 by baris35 on Wednesday 2nd of August 2017 03:40:28 PM

08-02-2017

Registered User

Hello All,
Thanks for your comments.

I'd like to inform you that MadeInGermany's script worked out as expected.
As I am not familiar with different kind of softwares/scripts etc, I am unable to provide feedback about the output of other alternatives.

Quote:

Originally Posted by MadeInGermany

The following bash script is typed from a mobile device and untested.
It uses 3 extra file handles, so it can read in a round-robin order.

Code:

while
  read a <&3; aexit=$?
  read b <&4; bexit=$?
  read c <&5; cexit=$?
  [ $aexit -eq 0 ] || [ $bexit -eq 0 ] || [ $cexit -eq 0 ]
do
  [ $aexit -eq 0 ] && printf "%s\n" "$a"
  [ $bexit -eq 0 ] && printf "%s\n" "$b"
  [ $cexit -eq 0 ] && printf "%s\n" "$c"
done 3< <( ls A/ ) 4< <( ls B/ ) 5< <( ls C/ )

and produces the following order

Code:

directory A, file 1.txt
directory B, file a.txt
directory C, file 101.txt
directory A, file 2.txt
directory B, file b.txt
directory C, file 102.txt
...

Improvements are welcome.

Thank You All for your valuable comments / recommendations

Kind regards
Boris

baris35

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INSTALLSIEVE(1) 					      General Commands Manual						   INSTALLSIEVE(1)

 *

NAME

       installsieve - user utility for managing sieve scripts

SYNOPSIS

       installsieve

DESCRIPTION

       installsieve is a utility that allows users to manage their sieve scripts kept on the server.

OPTIONS

       -v <name> View script with the given name. The script if retrieved sucessfully is output to standard output.

       -l  List  all  of  the scripts currently on the server. If one of the scripts is active a arrow is printed indicating that it is the active
       script.

       -p <port> Port to connect to. If left off this defaults to "sieve" as defined in /etc/services.

       -i <file> Install a file onto the server. If a script with the same name already exists on the server it is overwritten.  Upon  sucessfully
       putting	the  script on the server the script is set active. If <file> has the extension .script it is chopped when put on the server since
       sieve names may not contain a '.'.

       -a <name> Set <name> as the active script. The list of available names can be obtained from the '-l' option..

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       -m <mechanism> Force installsieve to use <mechanism> for authentication. If not specified the strongest authentication mechanism is chosen.

       -g <name> Get the sieve script with <name> and save it to disk with a ".script" extension. If a file with that name already  exists  it	is
       overwritten.

       -u <user> Userid/Authname to use for authentication; by default, the current user.

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