1. yep u were right
can help me as its giving me the same output as the other command.
2. and i used cat when i was running the individual command from the user prompt and wanted to see the o/p
3. i want following code in such a way that " i " should be used used from
the result of above command.
4. Nope i do not need temporary file. Its just that these txt (flat) files are created by a program and then one file has to be selected out of other files which is most recent. And then that file has to be removed once processing is done on that file.
Hi there,
i am trying to create a script that checks for the existence of users on the system, if they exist then their details should print on the screen with a message that the id is in use. I am having a bit of trouble with it.
Any ideas?
Cheers
Kev! (8 Replies)
Dear all
I am new to shell script. And this is my first post to this site as well as this forum. I would like to tell this forum that I require shell script, which is regarding transfers of files from a specific directory in a server A to server B on a specific directory through sftp command.... (5 Replies)
Kindly help,
Suppose i am having a file that has got the following contents. Is there any way (eg. sed command) to remove the (*) (*any number) pattern.
se.bas
tulf.h
(1)
tuna.c
(1)
tunsim.c
(1)
tus.cpp
(1)
vp.c
(1)
vp.h
(1)
vpi.
(1) (1 Reply)
To create RAW socket in Unix/Linux why should one have root permissions?
Any other work around to create raw sockets in Unix/Linux using a normal login id? Since I don't have super user credentials and I want to create RAW sockets.
Let me know if you are aware of any work around. (3 Replies)
Hi,
Can someone help me with creating a bash shell script.
I need to create a script that gets a positive number n as an argument.
The script must create n directories in the current directory with names like map_1, map_2 etcetera. Each directory must be contained within its predecessor. So... (7 Replies)
My data is something like shown below.
date1 date2 aaa bbbb ccccc
date3 date4 dddd eeeeeee ffffffffff ggggg hh
I want the output like this
date1date2 aaa eeeeee
I serached in the forum but didn't find the exact matching solution. Please help. (7 Replies)
Hi
i have created a solaris zone but have not yet connected any network cables for this new zone,
can i set the zone up without running the command 'add net' and not adding an ip or physical interface?
i tried to add dummy internet settings and get this
zonecfg:coddr> add net... (4 Replies)
Hello All,
I am application admin. I need to clear all the temporary files cleared by the applications. I need help/suggestion that is there any way to create a file system such that every Dir created in by any user will have 775 permissions. So, that i can simply clear the temporary file which... (6 Replies)
I have a text file with contents like this:
a,b,c,
d~e,f,g,h~i,j
,k,l,m~n,o,p,q~
I need to convert this file into this format unix shell script commands:
a,b,c,d~
e,f,g,h~
i,j,k,l,m~
n,o,p,q~
as you may have noticed, I need to retain the ~ signs at the end.
Any help is greatly... (3 Replies)
Discussion started by: harsha1238
3 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)