The code in your script:
implies that you believe that writing the string Now exiting. to standard output from your script causes the script to stop running. It does not do that. It simply writes that text and continues running the rest of the code in your script. In this case, it sleeps for two seconds and breaks out of the loop looking for files being downloaded. And, then it immediately starts testing for the conditions you have set up to be verified as being present before you suspend your computer. If you want your script to exit (as indicated by your echo statement), you need to actually include an exit statement in your code!
Does anyone know if there is a UNIX-tool available that constantly will check if (some specific) deamons are running and will notify (via email) if one has failed/stopped?
I searched the web, but so far didn't find anything. (3 Replies)
Hi ,
I have a csh code below which check the process if it's running.
Can any expert advise me on the following:
1) what does this notationmean ">!" and how is it different from the append ">" notation ?
2) how does "setenv" work in this code ?
# Check whether there is a running... (3 Replies)
Hi
I would like to check if an instance of a script is already running.
I've seen many different examples, but I haven't the slightest idea as to how to do this.
Can you please help.
Thank you. (5 Replies)
Hi
What is the best command to check if a particular process is running in a linux server or not
To check any java process, I use the below command.
ps -ef |grep jvm
When I execute the above command, it lists me all the processess . The above command should ideally return only the... (6 Replies)
Hi,
I had search the web for a script to download email, but failed to found one.
I need a bash or perl script that will check for email originating from an address such as john@rambo.com and download the .zip attachment into a specified folder.
Anyone could assist or give me some... (1 Reply)
Happy New Year
Is there a quick way to check to see if a script is already running.
I want to put in a check in the script to exit, if already running.
Currerntly i can only think of doing it the following way.
# ps -ef | grep -i 3_HOUSEKEEPING_FFTVTL_TO_FFTDSSU_DUPLICATION.ksh |... (5 Replies)
I have a script on a Linux box which scp the files to windows server without any issues. but there are time frames where the windows server will not be available due to maintenance. hence I need to check if the remote location is available before running the scp command.
scp... (3 Replies)
Hello,
Could someone do the following bash ubuntu script for me? I have 5 screen processes of bot:
SCREEN -dmS Xbot_instance_1 php core.php -i 1
SCREEN -dmS Xbot_instance_2 php core.php -i 2
SCREEN -dmS Xbot_instance_3 php core.php -i 3
SCREEN -dmS Xbot_instance_4 php core.php -i 4
... (2 Replies)
Discussion started by: kotch
2 Replies
LEARN ABOUT PHP
eval
EVAL(3) 1 EVAL(3)eval - Evaluate a string as PHP codeSYNOPSIS
mixed eval (string $code)
DESCRIPTION
Evaluates the given $code as PHP.
Caution
The eval(3) language construct is very dangerous because it allows execution of arbitrary PHP code. Its use thus is discouraged.
If you have carefully verified that there is no other option than to use this construct, pay special attention not to pass any user
provided data into it without properly validating it beforehand.
PARAMETERS
o $code
- Valid PHP code to be evaluated. The code mustn't be wrapped in opening and closing PHP tags, i.e. 'echo "Hi!";' must be passed
instead of '<? echo "Hi!"; >'. It is still possible to leave and reenter PHP mode though using the appropriate PHP tags, e.g.
'echo "In PHP mode!"; ?>In HTML mode!<? echo "Back in PHP mode!";'. Apart from that the passed code must be valid PHP. This
includes that all statements must be properly terminated using a semicolon. 'echo "Hi!"' for example will cause a parse error,
whereas 'echo "Hi!";' will work. A return statement will immediately terminate the evaluation of the code. The code will be exe-
cuted in the scope of the code calling eval(3). Thus any variables defined or changed in the eval(3) call will remain visible
after it terminates.
RETURN VALUES eval(3) returns NULL unless return is called in the evaluated code, in which case the value passed to return is returned. If there is a
parse error in the evaluated code, eval(3) returns FALSE and execution of the following code continues normally. It is not possible to
catch a parse error in eval(3) using set_error_handler(3).
EXAMPLES
Example #1
eval(3) example - simple text merge
<?php
$string = 'cup';
$name = 'coffee';
$str = 'This is a $string with my $name in it.';
echo $str. "
";
eval("$str = "$str";");
echo $str. "
";
?>
The above example will output:
This is a $string with my $name in it.
This is a cup with my coffee in it.
NOTES
Note
Because this is a language construct and not a function, it cannot be called using variable functions.
Tip
As with anything that outputs its result directly to the browser, the output-control functions can be used to capture the output of
this function, and save it in a string (for example).
Note
In case of a fatal error in the evaluated code, the whole script exits.
SEE ALSO call_user_func(3).
PHP Documentation Group EVAL(3)