Hi all,I have some questions of forking new process,the code is below.Any help will be appreciated.
On line 3,in my opinion,it should recursive forever because sh execute the script again,the following will never be run,however,the code did exit if i omit the code below line 3.Second question,why subtract 1 on line 6?Thx.
Dear all.....
I am currently writing a Help-Desk / Knowledge Base application using PHP/PostGreSQL.
I authenticate the user using a quite elaborate mechanism of cookies. The problem is that using cookies (I also have a version using sessions with the same problem), I can only seem to get one... (4 Replies)
Alright, I think I know what I am doing with sed(which probably means I don't). But I cant figure out how to replace just the first occurance of a string. I have tried sed, ed, and grep but can't seem to figure it out. If you have any suggestions I am open to anything! (3 Replies)
;)Hi Everyone,
I am using solaris 5.10.
I have a java process running in server mode in unix.
The problem is that it automatically forks i.e creates a child process.
I mean suddenly two instances of that process start running , in which the process-id of first instance is the parent... (0 Replies)
Hi Everyone,
I am using solaris 5.10.
I have a java process running in server mode in unix.
The problem is that it automatically forks i.e creates a child process.
I mean suddenly two instances of that process start running , in which the process-id of first instance is the parent... (5 Replies)
I am trying to debug the following script. It appears that when the check for script running occurs, it's finding the actual grep statement and causing the script believe the script is already running. This is deployed on two different servers where one works fine, the other doesn't. Any ideas?
... (2 Replies)
Hi All,
I have a problem mentioned below.
I have a script which performs line by line operations on several files.
I have a temp_file storing the list of names of the file to be validated. Right not in while loop i validate these files one by one.
Is there anyway that i can modify... (1 Reply)
I need to install a tomcat6 with multiple instances like instance1,instance2 and instance3 in a server.
I came to know that for that we need to install tomcat6,apache2.0,mod_jk1.2 and jre with tools.jar installed.And we need to create multiple instances with same web.xml and difference... (0 Replies)
I've been bitten by using a lock or pid file to prevent multiple instances of a script. A user typed kill -9, and the pid file didn't go away. You can't trap -9. So when he tried to restart, it said "already running", and I got trouble report. Argh.
So here's what we came up with:
# Stop if... (1 Reply)
Hello.
I plan to use mysql with only instance database so I can stop one database for maintenance without stopping every thing.
When one reads through the my.cnf config file, it is not clear if we must use at the same time a single database mysql plus any instances mysqld2 (for app1), mysqld3... (1 Reply)
Hi Guys,
I have a main_script.sh which runs every day and scheduled in crontab.
in the main script i read data from config file
test.config
apple
mango
orange
main_script.sh
for i in `cat test.config`
do
if
then
echo 'Apple' (3 Replies)
Discussion started by: Master_Mind
3 Replies
LEARN ABOUT OPENSOLARIS
escape
escape(1) Mail Avenger 0.8.3 escape(1)NAME
escape - escape shell special characters in a string
SYNOPSIS
escape string
DESCRIPTION
escape prepends a "" character to all shell special characters in string, making it safe to compose a shell command with the result.
EXAMPLES
The following is a contrived example showing how one can unintentionally end up executing the contents of a string:
$ var='; echo gotcha!'
$ eval echo hi $var
hi
gotcha!
$
Using escape, one can avoid executing the contents of $var:
$ eval echo hi `escape "$var"`
hi ; echo gotcha!
$
A less contrived example is passing arguments to Mail Avenger bodytest commands containing possibly unsafe environment variables. For
example, you might write a hypothetical reject_bcc script to reject mail not explicitly addressed to the recipient:
#!/bin/sh
formail -x to -x cc -x resent-to -x resent-cc
| fgrep "$1" > /dev/null
&& exit 0
echo "<$1>.. address does not accept blind carbon copies"
exit 100
To invoke this script, passing it the recipient address as an argument, you would need to put the following in your Mail Avenger rcpt
script:
bodytest reject_bcc `escape "$RECIPIENT"`
SEE ALSO avenger(1),
The Mail Avenger home page: <http://www.mailavenger.org/>.
BUGS
escape is designed for the Bourne shell, which is what Mail Avenger scripts use. escape might or might not work with other shells.
AUTHOR
David Mazieres
Mail Avenger 0.8.3 2012-04-05 escape(1)