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Full Discussion: How to make faster loop in multiple directories?
Top Forums Shell Programming and Scripting How to make faster loop in multiple directories? Post 303025223 by baris35 on Sunday 28th of October 2018 12:23:15 PM
Old 10-28-2018
How to make faster loop in multiple directories?
Hello,
I am under Ubuntu 18.04 Bionic.
I have one shell script run.sh (which is out of my topic) to run files under multiple directories and one file to control all processes running under those directories (control.sh).
I set a cronjob task to check each of them with two minutes of intervals. When a process is dead or when all processes are dead during ramp-up, each process waits for the completion of previous one. That's okay but due to time consuming process of run.sh
it keeps me waiting. To write separate scripts just dedicated to each folder does not sound logic.
Is there a modern way to do this without entering all directory names ?
Just wish say to script: "implement your code to all subfolders"

control.sh
Code:
for A in folder1 folder2 folder3 folder4 folder5 folder6 folder7 folder8 \
folder9 folder10 folder11 folder12 folder13 folder14 folder15 ; do
cd $A
PID=$(cat *.pid)
if ! [ -n "$PID" -a -e /proc/$PID ]; then
/home/boris/public_html/run.sh $A
else
    echo "process exists, exit now!"
sleep 2
fi
cd ../
done


Thanks in advance
Boris
Last edited by baris35; 10-28-2018 at 02:11 PM.. Reason: typo error fix
 

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LEARN ABOUT OPENSOLARIS

script

script(1)							   User Commands							 script(1)

NAME

       script - make record of a terminal session

SYNOPSIS

       script [-a] [filename]

DESCRIPTION

       The  script  utility  makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
       record is saved in the file typescript. See WARNINGS.

       The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
       when the forked shell exits or when Control-d is typed.

OPTIONS

       The following option is supported:

       -a    Appends the session record to filename, rather than overwriting it.

NOTES

       script places everything that appears on the screen in filename, including prompts.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

WARNINGS

       script  can  pose  a  security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
       privileged user, that is, root. Be sure that typescript is not a link before running script.

SunOS 5.11							    30 Jan 2004 							 script(1)
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