Hi all,
plz can anybody tell me that if a script written for Bash shell also work for other shells and if yes , how ???
Thanks and Regards
SONAL (2 Replies)
Hi,
I have to write a program to compute the checksums of files
./script.sh
I wrote the program using bash and it took me forever since I am a beginner but it works very well.
I'm getting so close to the deadline and I realised today that actually I have to use normal Bourne shell... (3 Replies)
Again a comment removal requirement from me, refer my previous problem & solution for removing comment from ruby scripts: https://www.unix.com/shell-programming-scripting/118296-best-way-removing-comment-ruby-program.html
This time, it is for stripping of comments from Shell Script. I search for... (2 Replies)
Experts,
I am newbie in shell scripting. I want to write Bash shell scripts corresponding to windows bat files. I have installed cygwin at c:\cygwin and i am trying to crate the sh file using vi editor. i am not able to understand how to use linux/unix convention for the code. following is my... (1 Reply)
Experts,
I am newbie in shell scripting. I want to write Bash shell scripts corresponding to windows bat files. I have installed cygwin at c:\cygwin and i am trying to crate the sh file using vi editor. i am not able to understand how to use linux/unix convention for the code. following is my... (15 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Test that exactly one command line argrument is enter from the command line. If not, display the usage... (1 Reply)
Hi All,
I need some urgent help regarding some info.
I have a cluster of servers for which I have two scripts for management.
control.sh is a bash script meant for restarting/stopping the servers.
manger.ksh is a kshell script. It is a master script to manage restarting/stoppping and... (3 Replies)
Some question about the usage of shell scripts:
1.) Are the commands of the base shell scripts a subset of bash commands?
2.) Assume I got a long, long script WITHOUT the first line.
How can I find out if the script was originally designed für "sh" or "bash"?
3.) How can I check a given... (3 Replies)
Discussion started by: pstein
3 Replies
LEARN ABOUT SUSE
getline
GETLINE(3) Linux Programmer's Manual GETLINE(3)NAME
getline, getdelim - delimited string input
SYNOPSIS
#include <stdio.h>
ssize_t getline(char **lineptr, size_t *n, FILE *stream);
ssize_t getdelim(char **lineptr, size_t *n, int delim, FILE *stream);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
Before glibc 2.10:
getline(), getdelim(): _GNU_SOURCE
Since glibc 2.10:
getline(), getdelim(): _POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700
DESCRIPTION
getline() reads an entire line from stream, storing the address of the buffer containing the text into *lineptr. The buffer is null-termi-
nated and includes the newline character, if one was found.
If *lineptr is NULL, then getline() will allocate a buffer for storing the line, which should be freed by the user program. (In this case,
the value in *n is ignored.)
Alternatively, before calling getline(), *lineptr can contain a pointer to a malloc(3)-allocated buffer *n bytes in size. If the buffer is
not large enough to hold the line, getline() resizes it with realloc(3), updating *lineptr and *n as necessary.
In either case, on a successful call, *lineptr and *n will be updated to reflect the buffer address and allocated size respectively.
getdelim() works like getline(), except a line delimiter other than newline can be specified as the delimiter argument. As with getline(),
a delimiter character is not added if one was not present in the input before end of file was reached.
RETURN VALUE
On success, getline() and getdelim() return the number of characters read, including the delimiter character, but not including the termi-
nating null byte. This value can be used to handle embedded null bytes in the line read.
Both functions return -1 on failure to read a line (including end-of-file condition).
ERRORS
EINVAL Bad arguments (n or lineptr is NULL, or stream is not valid).
VERSIONS
These functions are available since libc 4.6.27.
CONFORMING TO
Both getline() and getdelim() were originally GNU extensions. They were standardized in POSIX.1-2008.
EXAMPLE
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
int
main(void)
{
FILE *fp;
char *line = NULL;
size_t len = 0;
ssize_t read;
fp = fopen("/etc/motd", "r");
if (fp == NULL)
exit(EXIT_FAILURE);
while ((read = getline(&line, &len, fp)) != -1) {
printf("Retrieved line of length %zu :
", read);
printf("%s", line);
}
free(line);
exit(EXIT_SUCCESS);
}
SEE ALSO read(2), fgets(3), fopen(3), fread(3), gets(3), scanf(3), feature_test_macros(7)COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU 2010-06-12 GETLINE(3)