02-20-2013
Thanks for your response, Alister.
What do you mean by unsynchronized? The example I gave was just for simplicity, but typically the scripts are perl or python programs that read the file (gigabites in size). But don't write to it or append anything.
Just wondering if I am screwing things up by accessing the file with multiple programs.
Thanks again,
Torch
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
if i have a program (example admintool), if i want to keep a log of what i did in admintool,
can i do this admintool > admintool_log.
i have tried but the system just waits there....
then i did a kill and see the file.
the file has the main menu screen...
basically, i want to keep a log... (3 Replies)
Discussion started by: yls177
3 Replies
2. Shell Programming and Scripting
I wanted to know the format everyone uses for cfg files that are called by shell programs. I do mostly sh and ksh scripts and many times I'm modifying an existing script to do another task.
Recently I have been making my scripts more generic and using configuration files to hold uniq details.... (3 Replies)
Discussion started by: tomas
3 Replies
3. Shell Programming and Scripting
Hi All,
I have encountered a problem,please help me.
I have a script in which multiple processes are writing on to the same file .
How should I stop this , I mean lock mechanism can be implemented or we can write the at different files and then concatenate the files.
What would be a better... (1 Reply)
Discussion started by: Sayantan
1 Replies
4. UNIX for Dummies Questions & Answers
Hi,
i want to call two programs simultaneously from a currently running program so as to distribute the job and fasten the speed.
As of now I call the programs one after the other within the main program.
e.g.
`perl A.pl`;
`perl B.pl`;
how can I run the two paralelly?
urgent ... please... (1 Reply)
Discussion started by: vipinccmb
1 Replies
5. UNIX for Dummies Questions & Answers
I was curious how to tell which programs are accessing a file (libobjc.A.dylib) in /usr/lib
This file seems to be the culprit in a bunch of Safari crashes, and I just wanted to know if and what other programs use it.
Also, I was curious what a good way to find out what files are being written... (4 Replies)
Discussion started by: glev2005
4 Replies
6. UNIX for Dummies Questions & Answers
Are the programs written on schedulers ,thread library , process management, memory management, et al called systems programs ? How are they different from the programs that implement functions like open() , printf() , scanf() , read() .. they have a prefix sys_open, sys_close, sys_read etc , right... (1 Reply)
Discussion started by: vishwamitra
1 Replies
7. Programming
Flow of program:
C based CGI is used
CGI1:
-Gets called when user hits upload button(submit) ie form action = CGI1
-Does the file upload (copy to a directory etc)
JS, Ajax fucntion:
-A JS function is called when user hits upload button
-The JS function opens an Ajax request for CGI2... (8 Replies)
Discussion started by: xs2punit
8 Replies
8. Shell Programming and Scripting
Hi,
I'd like to redirect the STDOUT output from my script to a file and simultaneously display it at a console.
I've tried this command:
myscript.sh | tail -f
However, it doesn't end after the script finishes running
I've also tried this:
myscript.sh | tee ~/results.txt
But it writes... (3 Replies)
Discussion started by: wenclu
3 Replies
9. UNIX for Dummies Questions & Answers
Hey guys,
Suppose i run passwd via bash shell. It is a suid program, which temporarily runs as root(owner) and modifies the user entries.
However, when i write a C file and give 4755 permission and root ownership to the 'a.out' file , it doesn't run as root in bash shell. I verified this by... (2 Replies)
Discussion started by: syncmaster
2 Replies
10. Shell Programming and Scripting
Hello Team-
we would like to implement an approach which has to write the log file simultaneously
when .sql file is executing by Unix process. At present,it is writing the log file
once the process is completed. I've tested the current process with the below
approaches and none of them... (1 Reply)
Discussion started by: Hima_B
1 Replies