How to run multiple functions in Background in UNIX Shell Scripting?
Hi,
I am using ksh , i have requirement to run 4 functions in background , 4 functions call are available in a case that case is also in function, i need to execute 1st function it should run in background and return to case and next i will call 2nd function it should run in background and return to case again to ask for anyother option to execute in backgorund.
I tried to
using this 1 functions is being called and running and i am able to call other function but it is displaying as process already exists and the main script itself is getting terminated.
I searched the forum and saw fork(); command but i am not clear to use that and i saw in one forum that it is bad to use that and not advisable.
Please Advise how to achive the functions to run in background and i cant split the script making 4 different scripts.
I have a following program:
echofunc()
{
filename=$1
echo "reading $filename"
while read line
do
echo $line;
sleep 6;
done < $filename
}
split -5 new.dat
ls x* > input.dat
while read file
do
echofun $file &
done < input.dat (3 Replies)
I am trying to write a script that will ssh into a remote machine and recurse through a specified directory, find mp3 files which may be two or three directories deep (think iTunes: music/artist/album/song.mp3), and scp them back to the machine running the script. The script should also maintain... (3 Replies)
hello there,
there's a function, in my shell script, i'd like to run in the background.
here's an example:
log()
{
local SELF=${0##*/}
tty -s && echo ": $*"
}
some_func()
{
# do something
log "This text is not displayed in the terminal's output when running in the... (1 Reply)
Dear All,
I am trying to run a script in background like ./scriptname.sh & but when i try to run it in background it is giving me an error "syntax error at line 12: `(' unexpected" at the line 12, there is a function definition
"function getFileList()".
This script runs fine if i run on... (2 Replies)
I have written the below query to genrate a telephone.I am passing account number from oracle database.
I am calling 2 scripts which generate the bill
1. bip.sh (it runs in the background)
2.runXitInvoice_PROFORMA_integ
bip.sh generates a number which runXitInvoice_PROFORMA_integ
uses.How... (7 Replies)
Hi Guys,
i am having a script which checks for ip address is pingable or not,when i execute this script in terminal it keeps on showing the pinging status of every ip address and it takes more time when i check for 100 ip address,How to do run a script in background without showing in the terminal... (4 Replies)
Hello,
I have a requirement to apply hashing algorithm on flat file on one or more columns dynamically based on header
sample input file
ID|NAME|AGE|GENDER
10|ABC|30|M
20|DEF|20|F
say if i want multiple columns based on the header example id,name or id,age or name,gender and hash and... (13 Replies)
Hello All,
just wanted to export multiple tables from oracle sql using unix shell script to csv file and the below code is exporting only the first table.
Can you please suggest why? or any better idea?
export FILE="/abc/autom/file/geo_JOB.csv"
Export= `sqlplus -s dev01/password@dEV3... (16 Replies)
Discussion started by: Hope
16 Replies
LEARN ABOUT OPENSOLARIS
shell
shell(1F) FMLI Commands shell(1F)NAME
shell - run a command using shell
SYNOPSIS
shell command [command] ...
DESCRIPTION
The shell function concatenate its arguments, separating each by a space, and passes this string to the shell ($SHELL if set, otherwise
/usr/bin/sh).
EXAMPLES
Example 1 A sample output of shell command.
Since the Form and Menu Language does not directly support background processing, the shell function can be used instead.
`shell "build prog > /dev/null &"`
If you want the user to continue to be able to interact with the application while the background job is running, the output of an exe-
cutable run by shell in the background must be redirected: to a file if you want to save the output, or to /dev/null if you don't want to
save it (or if there is no output), otherwise your application may appear to be hung until the background job finishes processing.
shell can also be used to execute a command that has the same name as an FMLI built-in function.
NOTES
The arguments to shell will be concatenate using spaces, which may or may not do what is expected. The variables set in local environments
will not be expanded by the shell because "local" means "local to the current process."
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO sh(1), attributes(5)SunOS 5.11 5 Jul 1990 shell(1F)