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Full Discussion: [ksh93+] Array fed by function is empty when used in main.
Top Forums UNIX for Dummies Questions & Answers [ksh93+] Array fed by function is empty when used in main. Post 302826899 by Corona688 on Thursday 27th of June 2013 02:30:28 PM
Old 06-27-2013
Quote:
Originally Posted by bibou25
I feel that i am missing something obvious but i can't find what is wrong.

I have a script that is launching some functions with "&" and each call is feeding the array with a value. When all calls are finished I just want to retrieve the values of that array.

It is looking like that :

Code:
#!/user/bin/ksh

#Function called with & 
fct()
{
 sleep $1
 tab_track[$1]="$(date)"
}

#Main
for OneIteration in 1 2 3 4 5
do
fct $OneIteration &
done

wait

echo "Display time"

for OneLine in "${tab_track[@]}"
do
   echo ${OneLine}
done

Any idea ?
If you wanted to do multiple commands at once and save their results in order, you must first save them separately, because once they're in the background they'll run in no particular order at all.

Code:
#Function called with & 
fct()
{
 sleep $1
 date
}

for X in 1 2 3 4 5
do
        fct > /tmp/$$-$X &
done

wait # Let them all finish

# Set the array
set -a ARR `cat /tmp/$$-*`

# Remove temp files
rm -f /tmp/$$-*

 

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LEARN ABOUT OPENSOLARIS

gvfs-save

gvfs-save(1)							   User Commands						      gvfs-save(1)

NAME

       gvfs-save - save information to a file using the VFS system

SYNOPSIS

       gvfs-save [-b] [-c] [-a] [-p] [-v] [-e] URI

DESCRIPTION

       gvfs-save saves information to a file using the VFS system.

OPTIONS

       The following options are supported:

       -b	Create backup

       -c	Only create if not existing

       -a	Append to end of the file

       -p	When creating a file, restrict access to the current user only

       -v	Print etag that the end

       -e	The etag of the file being overwritting

EXAMPLES

       Example 1: Append a string to the end of a local file

       example% echo "hello" | gvfs-save file:///tmp/example

       Example 2: Append a file to a remote file storing a backup

       example% gvfs-cat file:///tmp/file | gvfs-save -b smb://server/dir/file

ENVIRONMENT VARIABLES

       See environ(5) for descriptions of the following environment variables: NLSPATH.

EXIT STATUS

       The exit value 0 is returned regardless of success or failure.

FILES

       The following files are used by this application:

       /usr/bin/gvfs-save      Executable to save information to a file using the VFS system

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWgnome-gvfs		   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Volatile			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       gvfs-copy(1),  gvfs-cat(1), gvfs-less(1), gvfs-ls(1), gvfs-mkdir(1) gvfs-monitor-dir(1), gvfs-monitor-file(1), gvfs-mount(1), gvfs-move(1),
       gvfs-rename(1), gvfs-open(1), gvfs-rm(1), gvfs-info(1), gvfs-trash(1), gvfs-tree(1), attributes(5), environ(5)

NOTES

       Written by Alvaro Lopez Ortega, Sun Microsystems Inc., 2008.

SunOS 5.11							    25 Mar 2008 						      gvfs-save(1)
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