I'm a Unix newbie.
In a shell-script, is there any way to accept keyboard input (via STDIN) without having it display on the screen? I know keying in a login password sort of does this by replacing what you key with astericks (*) but I believe that's a "C" routine. I'd like to be able to... (2 Replies)
Hi,
First of all i am using solaris 10. I want to write a script that ask user to enter password and read the character input from keyboard. The ask to re-enter the password and then if they are match it will accept.
But my problem is I want to echo a '*' character instead of the character I... (4 Replies)
Hi,
I am passing the file filename to a program and I have to use the "<" sign:
program < filename
Inside the program I would like to assign the string "filename" to a variable var.
I can't do that with "var=$(echo $1)" because of the "<" sign.
Removing the "<" sign would work for echo,... (13 Replies)
Hi guys,
I am new to AWK and unix scripting. Please see below my problem and let me know if anyone you can help.
I have 2 input files (example given below)
Input file 2 is a standard file (it will not change) and we have to get the name (second column after comma) from it and append it... (5 Replies)
Hi,
I have a test.txt and would like to put in a different file but while putting in the other file, blank spaces are missing.
$ indicates blank spaces
filename: test.txt:
USA$$$840$$$$
Desired output
USA$$$840$$$$
Current output as per the following code.
while read j;
do... (3 Replies)
Hi Guys,
I have a big file like this. It has cache group line ( the bold lines ) and then followed by 10 status lines showing either Compelte or Failed. This pattern repeats several time. We can assume all the status lines have either Complete or Failed status for that Cache Group line.
I... (13 Replies)
in cygwin, cron-config will ask two inputs: yes or no.
1st question, answer is no
2nd question, answer is yes
my script:
echo no | cron-config
how do i pass yes to 2nd question ? (4 Replies)
Hi,
i have one problem with this script:
-------------------------------
cat hostid_gathering
#!/bin/bash
cat /home/user1/ip_switch | while read LINE; do
echo $LINE
/home/user1/expect_script2
done
------------------------------
cat /home/user1/expect_script2
#!/usr/bin/expect... (6 Replies)
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)