Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

how to suppress the status of fork in shell script

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting how to suppress the status of fork in shell script
# 8  
Old 02-29-2012
Code:
$ cat test.sh 
#!/bin/bash 
var1=$(date &)
echo $var1
echo "hello world";
wait
echo "value of var1 is  $var1";

i am in solaris and the above code works fine
# 9  
Old 02-29-2012
You can leave out the & , or do you specifically need a background process?

---------- Post updated at 08:46 ---------- Previous update was at 08:40 ----------

Quote:
Originally Posted by itkamaraj
[CODE][..]
i am in solaris and the above code works fine
The assignment to var1 will wait for "date &" to finish, so you can leave the ampersand out.
# 10  
Old 02-29-2012
itkamaraj:
In your script change var1=$(date &) to var1=$(date) &.

Scrutinizer: I need to use fork, cant leave &
# 11  
Old 02-29-2012
You can use a file to store and read from, or a named pipe

or a two-way pipe as is available in ksh93:
Code:
#!/bin/ksh
date |&
printf "%s" "hello world: "
read -p var1
echo "$var1"

Last edited by Scrutinizer; 02-29-2012 at 04:55 AM..
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Programming

Signal out from fork()'d shell script back to the C++ application

Hi, I am writing a C++ application; in which at one point I fork() a new process, which executes a shell script (via execv() call). Now the shell script can take a while to finish (tarring, burning a cd, etc.) and I would like to update the parent application about the progress (while the script... (3 Replies)
Discussion started by: mirni
3 Replies

2. Shell Programming and Scripting

Shell Script for continuously checking status of a another script running in background, and immedia

Hi, I want to write a script which continuously checking status of a script running in background by nohup command. And if same script is not running then immediately start the script...please help.. i am using below command to run script nohup system_traps.sh & but in some... (9 Replies)
Discussion started by: ketanraut
9 Replies

3. Ubuntu

Help: how to call fork() in shell script? New to linux

Hi, I'm writing a shell script where I want to call fork(). However I wrote like this "var=fork()" in c style and got this error: "syntax error near unexpected token `(' " How could I call fork() in shell script? Thanks in advance. (2 Replies)
Discussion started by: Xiaoya
2 Replies

4. Shell Programming and Scripting

Help: how to call fork() in shell script? New to linux

Hi, I'm writing a shell script where I want to call fork(). However I wrote like this "var=fork()" in c style and got this error: "syntax error near unexpected token `(' " How could I call fork() in shell script? Thanks in advance. Duplicate Post - Continue Here - Please Do Not Cross Post... (0 Replies)
Discussion started by: Xiaoya
0 Replies

5. Shell Programming and Scripting

Help with Email Status shell script

I have written a bash script to to sort the data from logs i need some help in printing the outputs , i dont have much ideas in bah scripting. Sample script ----------------------- #!/bin/bash a=`date | cut -d " " -f2,2,3` cat /var/log/maillog |grep "$a" |grep -E -e 'deferred|bounced'... (9 Replies)
Discussion started by: unimaxlin
9 Replies

6. Shell Programming and Scripting

Run shell script from C program by calling fork and execl

I need to write a c program that uses the fork and excel system calls to run the shell script mode invoked like this: "./mode 644 ls -l" (that is the argumetns will always be 644 ls -l) here's the mode script: #!/bin/sh octal="$1" shift find . -maxdepth 1 -perm $octal -exec $@ {} \; ... (3 Replies)
Discussion started by: computethis
3 Replies

7. Shell Programming and Scripting

return status after run the shell script

Hello, I wanted to delete all files which are placed 14 days back. Here is my below script. My script works very well and it deletes all files 14 days back. I wanted to display message incase if the delete script is not successful. The below script returns always successful. But the directory... (6 Replies)
Discussion started by: govindts
6 Replies

8. Shell Programming and Scripting

status bar in shell script or perl

How To Generate different different progress bar in shell script? like we install some software it show us progress, like we install RPM that also show us progress. Thanks, Bash (2 Replies)
Discussion started by: learnbash
2 Replies

9. Shell Programming and Scripting

Suppress error message in shell script

Hi All this is a simple script #! /bin/bash FileCnt=`ls -lrt $DIR/* | wc -l` echo $FileCnt how could i escape the error msg if there are no files in $DIR ls: /home/sayantan/test/files/cnt/*: No such file or directory 0 Looking forward for a quick reply Regards, Newbie... (3 Replies)
Discussion started by: newbie07
3 Replies

10. Shell Programming and Scripting

checking exit status of a shell script

Hi, I have tried with the following code; if ;then echo "Failure." else echo "Success." fi to test the exit status of the test.ksh shell script. But whatever is the exit status of the test.ksh shell script Failure. is always printed. Please help. regards, Dipankar. (2 Replies)
Discussion started by: kdipankar
2 Replies
Login or Register to Ask a Question