Linux Program to Create a File using File Descriptors

This Linux Program illustrates Creating a new File using File Descriptors. To create a new file, we will going to use
creat() system call that takes two arguments. The first argument is the file-name and the second one is mode which sets the permissions of read, write and execute for file owner. In this example, we are using the mode as S_IRWXU which indicates that the file owner has the permissions to read, write and execute the file.

Here is the source code of Linux Program to Create a File using File Descriptors. The Linux Program is successfully compiled and run on a Linux system. The program output is also shown below.

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/*
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 * Linux Program to Create a File using File Descriptors.

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 */
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#include 
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#include 
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#include 
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#include 
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#include 
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#include 
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int main(int argc, char **argv)
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{
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    int fd;
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    if (argc  0) { 
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        printf("New file %s created!\n", argv[1]);

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    } else {
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        perror("Problem in creating the file.");

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        exit(1);
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    }
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}
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$ gcc create_file.c
$ ./a.out new_file
 
After executing the above command, creat() system call tries to create 
a new file with the name new_file and if it has been created successfully 
then we will see the output given below,
 
New file new_file created!

Sanfoundry Global Education & Learning Series – 1000 Linux Programs.

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