linux-kernel - List of more C programs.

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Message-ID: <CAFf+5zgHTkern=oZznsn3S6HKWYuC3vW086AXe+Gy5GKtzr=Ow@mail.gmail.com>
Date: Fri, 12 Sep 2025 12:48:10 +0530
From: Amit <amitchoudhary0523@...il.com>
To: linux-kernel@...r.kernel.org
Subject: List of more C programs.

------------------------
List of more C programs.
------------------------

* Shared condition variable across processes on the same machine example - make
  condition variable shareable across processes by setting condition variable's
  attribute to PTHREAD_PROCESS_SHARED -
            pthread_condattr_setpshared(&condAttr, PTHREAD_PROCESS_SHARED);
* Shared condition variable (library?) across remote processes on different
  machines.
* Generic dynamic key-value store library (in memory).
* Generic dynamic key-value store library (on disk).
* Generic dynamic key-value store library (on disk + cache in memory).
* Parse command line options (library?) and store as key-value pairs.
* Program to dump function names in a C program.
* Multi-line grep (call it mgrep) (search pattern will be interpreted as a regex
  by default, unless -F option is given).
* Only one function to get a list of IP addresses for a host name and only one
  function for getting the host name for an IP address (these functions can call
  other library functions / other functions).
* Program to discover all devices on LAN (IP addresses and host names) (see
  source code of nmap).
* Create a 1-50 GB empty file and create a (self developed) file system in that
  file.

* Give linux command line programs as functions (implement them as functions)?

* String library (more) functions: convert_num_to_words() (USA format),
  get_random_alphabetical_string(int length) - the returned string can be used
  as a file/directory name for a temporary file/directory,
  get_random_alphanumeric_string(int length) - the returned string can be used
  as a file/directory name for a temporary file/directory,
  get_file_name_from_path(), get_directory_name_from_path().

* File library? - get_file_size(), get_number_of_lines_in_file(),
                  get_file_permissions(), get_file_checksum(), copy_file(),
                  move_file(), rename_all_files_in_folder(),
                  replace_string_in_file(int create_backup, int case),
                  replace_regex_match_in_file(int create_backup, int case),
                  find_string_in_file(int case), find_regex_in_file(int case),
                  does_file_exist(), is_file_empty(),
                  create_temp_dir_and_get_name(),
                  create_temp_file_and_get_name(),
                  replace_line_in_file(long line_num),
                  replace_first_matching_line_in_file(),
                  replace_last_matching_line_in_file(),
                  replace_all_matching_lines_in_file(),
                  replace_regex_first_matching_line_in_file(),
                  replace_regex_last_matching_line_in_file(),
                  replace_regex_all_matching_lines_in_file(), is_regular_file(),
                  is_directory(), is_symlink().
                  copy_all_lines_from_first_match_to_last_match_to_new_file(
                        char *intput_file_path, char *output_file_path,
                        int regex_1, char *str_or_regex_1, int regex_2,
                        char *str_or_regex_2, int case-sensitive).

* Linux kernel - Character device driver example (See LDD examples on
  github.com).
* Linux kernel - /proc fs example.
* Linux kernel - PCI/PCIe device driver example (See LDD examples on
  github.com).

* Graphical apps using SDL:

        ** Personal expenses management.
        ** Flatmates expenses management.
        ** Task management (with reminders).
        ** Notes.
        ** Project management.
        ** Stock portfolio.
        ** Shared folder between linux machines.
        ** File transfer on LAN.
        ** Chat on LAN (send files also).