Thanks Corona!
My last thread related to strtok() function in this forum triggered this one , that I had hard time to understand the pointer moving along the line:
Quote:
tok = strtok(NULL, " \r\n\t"); // NULL means 'continue from last token'.
Is it possible to make function variables local?
I mean for example, I have a script variable 'name' and in function I have declared variable 'name'
I need to have script's 'name' have the same value as it was before calling the function with the same declaration.
The way to preserve a... (5 Replies)
Hi,
I have a base class and derived a class from the base class, i want to print & read the data for the object created for the derived class,so i have overloaded both the << and >> operators and also have done the foward declaration.
Below is the code snippet,
#include <iostream>
class... (3 Replies)
I attached a README file that I will refer to.
I successfully completed everything in the README file until step 4.
# pwd
/gani/gani-2.4.4
# ls
COPYING Makefile.macros gem.c
Makefile Makefile.sparc_gcc gem.h
Makefile.amd64_gcc ... (1 Reply)
I have no idea what the following means. The teacher is too advanced for me to understand fully. We literally went from running a few commands over the last few months to starting shell scripting. I am not a programmer, I am more hardware oriented. I wish I knew what this question was asking... (3 Replies)
Hi,
While installation of apache on linux, we perform the below tasks.
1) Untar
2) configure
3) make
4) make install.
I wanted to understand the difference and working of configure/make/make install.
Can any one help me understanding this?
Thanks in advance. (1 Reply)
I wrote the following Makefile:
dirs := a b c d
files := $(foreach dir,$(dirs),$(wildcard $(dir)/*))
.PHONY: all
all:
touch $(files)
The first two lines are taken from GNU make tutorial, Section 8.5 The foreach Function. I would expect the recipe
touch $(files)
to be... (2 Replies)
Greetings,
I m wondering if it's possible do do the following :
I have a simple function called "FindMoveDelete" which does the following :
FindMoveDelete()
{
find . -iname "$FILENAME*.ext" -exec mv {} "$PATH/$VAR" \; &&
find . -maxdepth 1 -type d -iname "$FILENAME*" -exec rm -rf {}... (6 Replies)
Hi,
If I declare a function inside another function, it overwrites any previously declared function with the same name. This is NOT what I want.
Example:
#!/bin/bash
_test() { echo test; }
_myf() {
# I'm using the same name as the other function.
_test() { echo local test; }... (8 Replies)
Hello -
I wrote few scripts on bash shell script and grafana triggers those scripts and show on console .
I want to write the console output to a log file as well by using tee command and I am successful as well . I am wondering Instead of writing same logic on multiple scripts , why... (4 Replies)
Hi All,
Good Day, seeking for your assistance on how to not perform my 2nd, 3rd,4th etc.. function if my 1st function is in else condition.
#Body
function1()
{
if
then
echo "exist"
else
echo "not exist"
}
#if not exist in function1 my all other function will not proceed.... (4 Replies)
Discussion started by: meister29
4 Replies
LEARN ABOUT REDHAT
strtok_r
STRTOK(3) Linux Programmer's Manual STRTOK(3)NAME
strtok, strtok_r - extract tokens from strings
SYNOPSIS
#include <string.h>
char *strtok(char *s, const char *delim);
char *strtok_r(char *s, const char *delim, char **ptrptr);
DESCRIPTION
A `token' is a nonempty string of characters not occurring in the string delim, followed by or by a character occurring in delim.
The strtok() function can be used to parse the string s into tokens. The first call to strtok() should have s as its first argument. Subse-
quent calls should have the first argument set to NULL. Each call returns a pointer to the next token, or NULL when no more tokens are
found.
If a token ends with a delimiter, this delimiting character is overwritten with a and a pointer to the next character is saved for the
next call to strtok(). The delimiter string delim may be different for each call.
The strtok_r() function is a reentrant version of the strtok() function, which instead of using its own static buffer, requires a pointer
to a user allocated char*. This pointer, the ptrptr parameter, must be the same while parsing the same string.
BUGS
Never use these functions. If you do, note that:
These functions modify their first argument.
These functions cannot be used on constant strings.
The identity of the delimiting character is lost.
The strtok() function uses a static buffer while parsing, so it's not thread safe. Use strtok_r() if this matters to you.
RETURN VALUE
The strtok() function returns a pointer to the next token, or NULL if there are no more tokens.
CONFORMING TO
strtok()
SVID 3, POSIX, BSD 4.3, ISO 9899
strtok_r()
POSIX.1c
SEE ALSO index(3), memchr(3), rindex(3), strchr(3), strpbrk(3), strsep(3), strspn(3), strstr(3)GNU 2000-02-13 STRTOK(3)