I just wrote a program in C to split a comma seperated string in to group of strings using strtok() function. The code is:
The program compiles without error(please bear any syntax error, since i typed in hand without the code with me but the orignial program compiles successfully) but i am getting runtime error like 'Segmentation Fault'. I hope there needs to be proper memory handling here which i am not sure of.
Please help me in getting this splitted set of strings to a new 2-D array.
Thanks in advance.
Hi,
Just a little comment after a quick look to your code: i would suggest you to allocate memory properly (using malloc) and not use a shortcut like this
How do I direct the output of an at command
at now < backupprogram
so that I see something happening. It says the job has been executed but I am not getting the tar file that my backup program on the computer anywhere at all
Please help me - I really am a struggling begginer. (1 Reply)
Hi all,
Right now I'm using this but it seems to be a hack:
if (prefix(arg, "mark=")) {
for (markid = strtok(args,"="); markid; markid=strtok((char *)NULL, "=")) {
basically the user passes "mark=ny" to the command. I want to be able to extract "ny" from that... (7 Replies)
When I do
time tar cvf /dev/st0 /mnt/junk >> /root/benchlog, I want it to put the output of the time command into the benchlog file, but it put /mnt/junk. How do I get it to put the output of the tar command? (1 Reply)
I have a script in which some outputs are directed to one file
echo "Load Started" >>${LOGFILE1}
If I have another file LOGFILE2 and i want to redirect the output of the above echo command to LOGFILE2 as well with the same command line... how can i do that?
Thanks (2 Replies)
Dear All
I have a simple bash script that creates a folder ( I called it TEMP) in the current directory.
The question is: how do I direct the output of my awk script into folder TEMP?
Below is my attempt:
#!/bin/bash
mkdir TEMP
echo Enter input file:
read infile
awk... (4 Replies)
Is there a way to keep the output of a script displayed on the terminal when it's run by itself, but suspend part of that output and only have a specific part delivered when it's piped to another script or program? I'm thinking something like the following pseudocode:
#!/bin/bash
... (1 Reply)
Hi Guys,
I've been having some arguments with my colleagues about one thing. Always my thought was that as as far as disk performance is concern by looking at the output of the iostat command (AIX) you would be able to identify if you have a hot disk and then by moving some files out that disk... (3 Replies)
I have an array and two variables as below,
I need to check if $datevar is present in $filename.
If so, i need to replace $filename with the values in the array.
I need the output inside an ARRAY
How can this be done.
Any help will be appreciated. Thanks in advance. (2 Replies)
I will start with an example of what I'm trying to do and then describe how I am approaching the issue.
File
PS028,005
Lexeme HRS # M #
PhraseType 1(1:1) 7(7)
PhraseLab 501 503
ClauseType ZYq0
PS028,005
Lexeme W # L> # BNH # M #... (17 Replies)
Discussion started by: jvoot
17 Replies
LEARN ABOUT PHP
strtok
STRTOK(3) 1 STRTOK(3)strtok - Tokenize stringSYNOPSIS
string strtok (string $str, string $token)
DESCRIPTION
string strtok (string $token)
strtok(3) splits a string ($str) into smaller strings (tokens), with each token being delimited by any character from $token. That is, if
you have a string like "This is an example string" you could tokenize this string into its individual words by using the space character as
the token.
Note that only the first call to strtok uses the string argument. Every subsequent call to strtok only needs the token to use, as it keeps
track of where it is in the current string. To start over, or to tokenize a new string you simply call strtok with the string argument
again to initialize it. Note that you may put multiple tokens in the token parameter. The string will be tokenized when any one of the
characters in the argument are found.
PARAMETERS
o $str
- The string being split up into smaller strings (tokens).
o $token
- The delimiter used when splitting up $str.
RETURN VALUES
A string token.
EXAMPLES
Example #1
strtok(3) example
<?php
$string = "This is an example
string";
/* Use tab and newline as tokenizing characters as well */
$tok = strtok($string, "
");
while ($tok !== false) {
echo "Word=$tok<br />";
$tok = strtok("
");
}
?>
The behavior when an empty part was found changed with PHP 4.1.0. The old behavior returned an empty string, while the new, correct,
behavior simply skips the part of the string:
Example #2
Old strtok(3) behavior
<?php
$first_token = strtok('/something', '/');
$second_token = strtok('/');
var_dump($first_token, $second_token);
?>
The above example will output:
string(0) ""
string(9) "something"
Example #3
New strtok(3) behavior
<?php
$first_token = strtok('/something', '/');
$second_token = strtok('/');
var_dump($first_token, $second_token);
?>
The above example will output:
string(9) "something"
bool(false)
NOTES
Warning
This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on
Booleans for more information. Use the === operator for testing the return value of this function.
SEE ALSO split(3), explode(3).
PHP Documentation Group STRTOK(3)