GLib – 2.0: Miscellaneous Utilities
Description: Reference for GLib-2.0: Miscellaneous Utilities

#### Miscellaneous Utilities

These are portable utility functions.

## Application Name and Environment

- `g_get_application_name()`
- `g_set_application_name()`
- `g_get_prgname()`
- `g_set_prgname()`
- `g_get_environ()`
- `g_environ_getenv()`
- `g_environ_setenv()`
- `g_environ_unsetenv()`
- `g_getenv()`
- `g_setenv()`
- `g_unsetenv()`
- `g_listenv()`
- `g_get_user_name()`
- `g_get_real_name()`

## System Directories

- `g_get_user_cache_dir()`
- `g_get_user_data_dir()`
- `g_get_user_config_dir()`
- `g_get_user_state_dir()`
- `g_get_user_runtime_dir()`
- `g_get_user_special_dir()`
- `g_get_system_data_dirs()`
- `g_get_system_config_dirs()`
- `g_reload_user_special_dirs_cache()`

## OS Info

Information about the current OS can be retrieved by calling `g_get_os_info()` and passing it one of the following keys (this list may grow in future):

- `G_OS_INFO_KEY_NAME`
- `G_OS_INFO_KEY_PRETTY_NAME`
- `G_OS_INFO_KEY_VERSION`
- `G_OS_INFO_KEY_VERSION_CODENAME`
- `G_OS_INFO_KEY_VERSION_ID`
- `G_OS_INFO_KEY_ID`
- `G_OS_INFO_KEY_HOME_URL`
- `G_OS_INFO_KEY_DOCUMENTATION_URL`
- `G_OS_INFO_KEY_SUPPORT_URL`
- `G_OS_INFO_KEY_BUG_REPORT_URL`
- `G_OS_INFO_KEY_PRIVACY_POLICY_URL`

## Paths

- `g_get_host_name()`
- `g_get_home_dir()`
- `g_get_tmp_dir()`
- `g_get_current_dir()`
- `g_canonicalize_filename()`
- `g_path_is_absolute()`
- `g_path_skip_root()`
- `g_path_get_basename()`
- `g_path_get_dirname()`
- `g_build_filename()`
- `g_build_filenamev()`
- `g_build_filename_valist()`
- `g_build_path()`
- `g_build_pathv()`

## Size Formatting

- `g_format_size()`
- `g_format_size_full()`
- `g_format_size_for_display()`

## Executables

- `g_find_program_in_path()`

## Bit Manipulation

- `g_bit_nth_lsf()`
- `g_bit_nth_msf()`
- `g_bit_storage()`

## Primes

- `g_spaced_primes_closest()`

## Process Lifetime

- `g_abort()`

## Debug

- `g_parse_debug_string()`

## Sorting

- `g_qsort_with_data()`

## Pointers

- `g_nullify_pointer()`

## Deprecated API

- `GVoidFunc`
- `GFreeFunc`
- `g_atexit()`