Vgersh is very good at this type of problem and I don't want to but in, but most cases, in most shells, using an array to store the data and exploding the array is a simple way to form a concatenated string of disparate variables.
Short example with bash and gawk.
Code:
function retrandstr() {
gawk '
function retrandchars(str, sz,rval,i) {
sz = int(1 + rand() * length(str))
i =0
#print sz, i;
while (i < sz) {
rval = rval substr(str,int((1 + rand() * length(str))),1);
i++;
}
return rval
}
BEGIN {
srand();
print retrandchars("abndhcv784893ndyvurfgh3ery348infy7478")
}'
sleep 1
}
Test--
while test "$i" -gt 0; do arr[$i]=`retrandstr`; i=`expr $i - 1`; done
list=${arr[@]}
A question to ask.
seq1 = "eeeeeeeeeeeeeeeeee";
seq2 = "dddddddddddddddddddd";
char a = '*';
strcat(*seq2, &a);
strcat(*seq1, seq2);
compilation
warning: passing arg 1 of `strcat' makes pointer from integer without a cast
thanks (4 Replies)
Hello,
I need experts help in converting the below tcl function to korn shell function equivalent.
proc lsNetMaskToBits {mask} {
set dw ; # Top N bits set
set dw 0x ; # Make sure it's hexadecimal, else XOR fails.
puts "lsNetMaskToBits dw $dw"
set dw ; # Complement => low 32-N bits... (1 Reply)
Hi
How to call a shell scripting through a Perl scripting? Actually I need some value from Shell scripting and passes in the Perl scripting. So how can i do this? (2 Replies)
Anyone have any ideas why when using strcat function I would get some garbage at the beginning of the output string? what I'm doing is something like the following example.
Code:
char temp;
char tempHolder;
for(int i=0;i<something;i++){
sprintf(temp,"%u ", someVariable);... (2 Replies)
I have some matlab code that sends the serial port elements of an array using matlab's fwrite function, e.g.:
fwrite(s, , 'uchar');
What would be a unix shell equivalent? E.g., after successfully accessing the port using instructions here:
Simple terminal serial port program for Linux/MacOSX... (3 Replies)
Hi all,
I am learning POSIX shell programming, and the book I read, uses the let command for integer arithmetic.
I have downloaded and use the shellcheck program on Linux.
This programs says:
In POSIX sh, 'let' is undefined.
See the screenshot attached.
What is the POSIX... (1 Reply)
Discussion started by: johnprogrammer
1 Replies
LEARN ABOUT PHP
get_defined_vars
GET_DEFINED_VARS(3) 1 GET_DEFINED_VARS(3)get_defined_vars - Returns an array of all defined variablesSYNOPSIS
array get_defined_vars (void )
DESCRIPTION
This function returns a multidimensional array containing a list of all defined variables, be them environment, server or user-defined
variables, within the scope that get_defined_vars(3) is called.
RETURN VALUES
A multidimensional array with all the variables.
EXAMPLES
Example #1
get_defined_vars(3) Example
<?php
$b = array(1, 1, 2, 3, 5, 8);
$arr = get_defined_vars();
// print $b
print_r($arr["b"]);
/* print path to the PHP interpreter (if used as a CGI)
* e.g. /usr/local/bin/php */
echo $arr["_"];
// print the command-line parameters if any
print_r($arr["argv"]);
// print all the server vars
print_r($arr["_SERVER"]);
// print all the available keys for the arrays of variables
print_r(array_keys(get_defined_vars()));
?>
SEE ALSO isset(3), get_defined_functions(3), get_defined_constants(3).
PHP Documentation Group GET_DEFINED_VARS(3)