Because if $path is obtained from user input or an input file, or otherwise not under your control someone could execute code with the permissions of the person executing the script.
If you are using bash 4 or you could switch to ksh93 then an alternative might be associative arrays:
This User Gave Thanks to Scrutinizer For This Post:
Using bash, I'm trying to read a .properties file (name=value pairs), assigning an indirect variable reference for each line in the file.
The trick is that a property's value string may contain the name of a property that occurred earlier in the file, and I want the name of the 1st property to... (5 Replies)
The construct ${#parameter} returns the number of characters in the parameter and ${!parameter} specifies an indirect variable. My question is: How do I combine these two. What I want is ${#!parameter} but this gives an error.
Of course I can use:
dummy=${!parameter}
${#dummy}
but that's a... (0 Replies)
Ummm can anybody help me with this one?
Its prob quite simple.
I bascially have a file name say J1x2x3x7.dat
Im using the file name as a variable in a bash script. Want I want to do is extract most of the file name and make it a new variable expect with say one of the number now a... (2 Replies)
Hi,
I've got a small problem.
If varible A stores "B" and Variable B stores C,
How to get the value of variable B by using only Variable A..?
I tried the following but didnt work pease help..
$ var1=vikram
$ echo $var1
vikram
$ vikram=sampath
$ echo $vikram
sampath
$ echo... (6 Replies)
Hi
I have variable A_B=alpha
also var1="A"
var2="B"
I want to retrieve the value alpha using var1 and var2 , somthing like
echo ${${var1}_${var2}} that works. Obviously this is receiving syntax
error (6 Replies)
Hello,
is there a kind soul who can answer me, does the SH support double substitution known as indirect expansion similar to BASH? The syntax for bash is ${!var}.
For instance in bash I can write something like this:
VAR="value"
REF_VAR="VAR"
echo ${!REF_VAR}
and get the "value"... (1 Reply)
I have a file with two columns of numbers (member IDs):
1 1
2 1
3 1
4 2
5 4
6 1
7 5
8 3
9 2
Think of column 1 as the referee and column 2 as the referrer.
Is there a good way to backtrack who referred who? I would like an output, for this example here to be:
1 1
2 1
3 1
4 2 1 (2 Replies)
Sometimes it is handy to protect long scripts in C++.
The following syntax works fine for simple commands:
#define SHELLSCRIPT1 "\
#/bin/bash \n\
echo \"hello\" \n\
"
int main ()
{
cout <<system(SHELLSCRIPT1);
return 0;
}
Unfortunately for there are problems for:
1d arrays:... (10 Replies)
Trying to do so
echo "111:222:333" |awk -F: '{system("export TESTO=" $2)}'But it doesn't work (2 Replies)
Discussion started by: urello
2 Replies
LEARN ABOUT PHP
apache_setenv
APACHE_SETENV(3) 1 APACHE_SETENV(3)apache_setenv - Set an Apache subprocess_env variableSYNOPSIS
bool apache_setenv (string $variable, string $value, [bool $walk_to_top = false])
DESCRIPTION apache_setenv(3) sets the value of the Apache environment variable specified by $variable.
Note
When setting an Apache environment variable, the corresponding $_SERVER variable is not changed.
PARAMETERS
o $variable
- The environment variable that's being set.
o $value
- The new $variable value.
o $walk_to_top
- Whether to set the top-level variable available to all Apache layers.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
Setting an Apache environment variable using apache_setenv(3)
<?php
apache_setenv("EXAMPLE_VAR", "Example Value");
?>
NOTES
Note
apache_setenv(3) can be paired up with apache_getenv(3) across separate pages or for setting variables to pass to Server Side
Includes (.shtml) that have been included in PHP scripts.
SEE ALSO apache_getenv(3).
PHP Documentation Group APACHE_SETENV(3)