I have a problem with a simple script I am trying to write. I want a user to type grep, sed commands that are then stored in variables. Those variables are stored in a function, and the function is then called to execute the commands. The idea is that the user does it step by step.
script:-
Code:
#!/bin/bash
#Filename: variabletest : Author: L.Pearce
function tptfunction
{
$tool $criteria $filename
}
echo
echo
echo "Type command in full:"
echo "1. Type the tool you are using."
read tool
echo "You typed $tool"
echo "2. Type criteria you wish to search."
read criteria
echo "You typed $criteria"
echo "3. Type the name of the file you are searching:"
read filename
echo "$filename is what you typed."
tptfunction
echo
echo
Hi everyone,
Im trying to write a Shell script that basically creates a set of files based on a file with many records. For example if a file called dummy has the following content:
a.txt
1st line of a's text file
2nd line of a's text file
3rd line of a's text file
b.txt
1st line of b's... (8 Replies)
Hi,
Let me explain the situation.
There are many files in a directory and its sub-directories that conatin the string pattern "pa". I want to replace all such instances with the pattern "pranavagarwal"
doing a
grep "pa" `ls`
does give me all the instances of the occurence of that... (3 Replies)
Hello
I do want to write a script which will check any errors say "-error" in the log file then have to send email to the concern person . And the concern person will correct the error .
Next time if the script runs eventhough the error has been corrected it will ... (1 Reply)
Hi,
I wish to format the output of a grep command in such a way that sed will be able to handle the newline characters held in the output.
Since sed does not allow newlines to be contained in a replacement pattern, that means adding a backslash '\' character to the end of each line from... (8 Replies)
Hi. This is my first post on the forums.
I am trying to write a script that will parse a folder of files "oneverylongfilenamexyz.pdf" and create a .dat file named "oneverylongfilenamexyz.dat" with the first line of each .dat file saying variable="xyz" where xyz is the last 14 characters of $i... (4 Replies)
I need help in the following script. I want to grep the sql errors insert into the error table and exit the shell script if there is any error, otherwise keep running the scripts.
Here is my script
#!/bin/csh -f
source .orapass
set user = $USER
set pass = $PASS
cd /opt/data/scripts
echo... (2 Replies)
Hi guys - below is my script that is checking for current file, size and timestamp.
However I added a "grep" feature in it (line in red), but not getting the desired result.
I am trying to acheive in output:
1. Show me the file name, timestamp, size and grep'ed words
It would be a... (2 Replies)
hi guys
very new to this game so excuse my ignorance. I need to create a script that simply greps for a text string and then outputs a message depending on whether the text string is there or not. The script I have setup is below, but whenever I run it I get the following error:
... (5 Replies)
Hi, I need to join these statements for efficiency, and without having to make a new directory for each batch. I'm annotating commands below.
wget -q -r -l1 URL
^^ can't use -O - here and pipe | to grep because of -r
grep -hrio "\b\+@\+\.\{2,4\}\+\b" * > first.txt
^^ Need to grep the output... (14 Replies)
Discussion started by: p1ne
14 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)