Hi, I am trying to write a ftp script which will read a file for filenames and ftp those files to another server. Here's my ftp script, but it's scanning the current directory for file names.
My question is how can I pass multiple files (these files will have the name of data files that need to... (0 Replies)
Hi All,
I wish to automate the unix command 'su' through a shell script.
I would like to pass the content of a file as password to 'su' command.
My script is as below,
#! /bin/sh
su userA
while read line
do
rpm -ivh $line
done < pwd.txt
where pwd.txt contains the password of... (6 Replies)
I have two files.
Fileone contains
text string one
text string two
text string three
Filetwo contains
Name:
Address:
Summary:
Name:
Address:
Summary:
Name:
Address:
Summary:
I would like to use sed to read each line of file one and put it at the end of the summary line of file... (3 Replies)
Hi,
Maybe this iscorrect forum for my question...
I should read one character at a fixed position from each line of the file. So how ??? should be substituted in the code below:
while read line ; do
single_char=`???`
echo "$single_char"
done < $input_file
OK...I did get an... (0 Replies)
1) I wrote a script and gave the desired permissions using "chmod 755 scriptname". Now if i edit the script file, why do i need to set the permission again? Didn't i set the permission attribute.. or if i edit the file, does the inode number of file changes?
2) I am running my unix on a server... (1 Reply)
Hi,
We are having a java server which can run on command line and once initiated, it will prompt options to enter from 0 to 5. The java program kickoff respective operation once number is entered between 0 to 5. However i want to always enter "1" and write another shell program wrapper to start... (4 Replies)
Hi,
I am calling a Perl script in my shell script. When Perl script is executed it asks for a answer to be entered by user from terminal. How can i pass that value from my shell script ??
I know I can change perl script to default the answer but i dont have access to do that so only option i... (5 Replies)
Hi All,
Do we know how to read input file within awk script and send output toanother log file. All this needs to be in awk script, not in command line. I am running this awk through crontab.
Cat my.awk
#!/bin/awk -f
function test(var){
some code}
{
}
END
{
print"test code"
} (5 Replies)
Hello,
i have page domain.com/form.php
the form fields on form.php are named:
name=ipaddress
name=port
and submit button is named: submit
i want to ask how the linux command will look like to submit the form filled with:
ipaddress: 127.0.0.1
port: 80
I tried various curl and... (5 Replies)
Team ,
I am trying to write a case condition for database backups.But I am unable to make the script to read input from command line .
while true ;do
read -p "Do You Wish To Take Database Backup ?? " yn
case $yn in
*) echo " YES take backup ";;
*) echo " NO BACKUP " ;;
... (9 Replies)
Discussion started by: rocking77
9 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)