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Top Forums UNIX for Beginners Questions & Answers How to convert my /bin/sh script with cgi and html to run it on browser!?? Post 303039670 by Corona688 on Friday 11th of October 2019 11:38:32 AM
Old 10-11-2019
To be clear: We cannot pull a rabbit out of our hat and give you perfect code. You've given us too many unknowns and change everything we give you far too much. What I am trying to do is show you how to troubleshoot. The basics are:
  1. SIMPLIFY.
    • Strip the webpage out of your script to remove that complication.
    • If that doesn't help, remove EVERYTHING until it starts working. Pare it down to 'hello world'. Then add things back, one by one, until something breaks.
  2. IGNORE ASSUMPTIONS.
    • You think grep is working. Do you know that for a fact? You're using the same name every time, it could have created that file last week.
  3. TEST.
    • The error could be in something 90 lines up. You're getting NO OUTPUT when you should be getting something. That hints the program is breaking early.

Zero feedback tells you nothing. Try this:

Code:
#!/bin/bash

# Make sure errors get shown in web browser.  DO THIS FIRST!
exec 2>&1

# Make sure web browser shows everything raw
echo "Content-Type:  text/plain"
echo

echo "Text output test"
echo "Error output test" >&2
echo
echo "Query is: ${QUERY_STRING}"

IFS="&=" ; set -- ${QUERY_STRING}

while [ "$#" -gt 0 ]
do
        echo "Got variable $1=$2"

        case "$1" in
        val_x) XX="$2" ; shift ;;
        val_y) YY="$2" ; shift ;;
        val_z) ZZ="$2" ; shift ;;
        *) ;; # Ignore unknown option
        esac
        shift
done

echo "got XX=$XX YY=$YY ZZ=$ZZ"

grep "$XX" /var/www/html/* > /tmp/a.txt
echo "grep returned $?"
sed 's/INFO.*;|//g' /tmp/a.txt > /tmp/b.txt
echo "sed returned $?"


Last edited by Corona688; 10-11-2019 at 12:50 PM..
 

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INTVAL(3)								 1								 INTVAL(3)

intval - Get the integer value of a variable

SYNOPSIS
int intval (mixed $var, [int $base = 10]) DESCRIPTION
Returns the integer value of $var, using the specified $base for the conversion (the default is base 10). intval(3) should not be used on objects, as doing so will emit an E_NOTICE level error and return 1. PARAMETERS
o $var - The scalar value being converted to an integer o $base - The base for the conversion Note If $base is 0, the base used is determined by the format of $var: o if string includes a "0x" (or "0X") prefix, the base is taken as 16 (hex); otherwise, o if string starts with "0", the base is taken as 8 (octal); otherwise, o the base is taken as 10 (decimal). RETURN VALUES
The integer value of $var on success, or 0 on failure. Empty arrays return 0, non-empty arrays return 1. The maximum value depends on the system. 32 bit systems have a maximum signed integer range of -2147483648 to 2147483647. So for example on such a system, intval('1000000000000') will return 2147483647. The maximum signed integer value for 64 bit systems is 9223372036854775807. Strings will most likely return 0 although this depends on the leftmost characters of the string. The common rules of integer casting apply. EXAMPLES
Example #1 intval(3) examples The following examples are based on a 32 bit system. <?php echo intval(42); // 42 echo intval(4.2); // 4 echo intval('42'); // 42 echo intval('+42'); // 42 echo intval('-42'); // -42 echo intval(042); // 34 echo intval('042'); // 42 echo intval(1e10); // 1410065408 echo intval('1e10'); // 1 echo intval(0x1A); // 26 echo intval(42000000); // 42000000 echo intval(420000000000000000000); // 0 echo intval('420000000000000000000'); // 2147483647 echo intval(42, 8); // 42 echo intval('42', 8); // 34 echo intval(array()); // 0 echo intval(array('foo', 'bar')); // 1 ?> NOTES
Note The $base parameter has no effect unless the $var parameter is a string. CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.1.0 | | | | | | | Throws E_NOTICE and returns 1, when an object is | | | passed to $var. | | | | +--------+---------------------------------------------------+ SEE ALSO
boolval(3), floatval(3), strval(3), settype(3), is_numeric(3), Type juggling, BCMath Arbitrary Precision Mathematics Functions. PHP Documentation Group INTVAL(3)
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