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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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PARSE_STR(3)								 1							      PARSE_STR(3)

parse_str - Parses the string into variables

SYNOPSIS
void parse_str (string $str, [array &$arr]) DESCRIPTION
Parses $str as if it were the query string passed via a URL and sets variables in the current scope. Note To get the current QUERY_STRING, you may use the variable $_SERVER['QUERY_STRING']. Also, you may want to read the section on vari- ables from external sources. Note The magic_quotes_gpc setting affects the output of this function, as parse_str(3) uses the same mechanism that PHP uses to populate the $_GET, $_POST, etc. variables. PARAMETERS
o $str - The input string. o $arr - If the second parameter $arr is present, variables are stored in this variable as array elements instead. RETURN VALUES
No value is returned. EXAMPLES
Example #1 Using parse_str(3) <?php $str = "first=value&arr[]=foo+bar&arr[]=baz"; parse_str($str); echo $first; // value echo $arr[0]; // foo bar echo $arr[1]; // baz parse_str($str, $output); echo $output['first']; // value echo $output['arr'][0]; // foo bar echo $output['arr'][1]; // baz ?> SEE ALSO
parse_url(3), pathinfo(3), http_build_query(3), get_magic_quotes_gpc(3), urldecode(3). PHP Documentation Group PARSE_STR(3)
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