I'm trying to redirect awk's output to a BASH variable. Currently the statement looks like this
options=`awk '{ while (i < NF) { print $i; ++i } }' answer
but for some reason that makes $options look like this:
1 2 3 4
1
2
3
Now, the input file 'answer' is taken from a dialog... (3 Replies)
Hi,
I would like to list files: ls *.hdf
But I would like a copy of the output directed to the screen, but also APPENDED to a text file: test.txt
I have tried:
ls *.hdf | tee test.txt
However, that will just write over everything already existing in test.txt. How can I append the... (1 Reply)
Hi all,
Currently, i have a log file seperated by 'tab' and each record starting with a new line. i managed to retrieve the column that i'm interested in. (source_ip_address: xxx.xxx.xxx.xxx).
example of awk output: '{ print $43 }' assuming the field is at column 43.
10.10.10.10... (4 Replies)
Hi
i am compiling a source code by make command.
i want to redirect the output of make to a file but at the same time i want to see the output in terminal.
how to do this ?.
please suggest your idea.
thanks in advance.
Saravana
---------- Post updated at 05:24 PM ----------... (2 Replies)
Hi,
I have a function in a bash script that returns a string after some operations using awk.
The following code returns 555
$VARIABLE="EXAMPLE"
get_number $VARIABLE
this value I'd like to pass it as a second argument of another script with the following usage
myscript.sh <param1>... (7 Replies)
Im trying to read the awk output to two variables. In the below code i need to store the if part output to a variable (NEW) and else part output to another variable (BAD). Pls shed some light on this snippet or if there is any other way to achieve it wud be appreciated (only condition is it needs... (7 Replies)
Hi
I need to assign the ouput of a awk statement to two variables; below is a example of the txt file i have which I use awk against
sample file
testval,USA,loc2,testing02
testval1,GB,loc4,testing01
awk statement
awk -F , '{print $2,$3}'
USA loc2
GB loc4
I need a method where... (6 Replies)
Below script perfectly works, giving below mail output. BUT, I want to make the script mail only if there are any D-Defined/T-Transition/B-Broken State WPARs and also to copy the output generated during monitoring to a temporary log file, which gets cleaned up every week. Need suggestions.
... (4 Replies)
Hi Guys,
I want to redirect the output of 3 scripts to a file and then mail the output of those three scripts.
I used below but it is not working:
OFILE=/home/home1/report1
echo "report1 details" > $OFILE
=/home/home1/1.sh > $OFILE
echo... (7 Replies)
Hi,
I want to compare a value from test file and redirect the o/p value to the same file
input file
250 32000 32 128
Below is my code
awk '{ if ($1 < "300") print $1 > /tmp/test}' test
want to compare 250 < 300 then print 300 to the same place
below is the... (24 Replies)
Discussion started by: stew
24 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)