Linux command
getconf 命令
文本
复制后可按需替换文件名、目录或参数。
常用示例
Example
getconf -a
Example
getconf -a [path/to/directory]
Example
getconf LONG_BIT
Example
getconf CHILD_MAX
Example
getconf -a | grep MAX
说明
getconf retrieves system configuration variables defined by POSIX and system-specific extensions. These values represent system limits and capabilities that applications can query to adapt their behavior. Variables fall into two categories: system-wide values (like CHILD_MAX, PAGE_SIZE) and pathname-specific values (like PATH_MAX, NAME_MAX) that may vary by filesystem. This is useful for shell scripts that need to query system limits without hardcoding values, ensuring portability across different systems.
参数
- -a
- Display all configuration variables and their values
- -v _SPEC_
- Use specification _SPEC_ for configuration values
- LONG_BIT
- Number of bits in a long integer (32 or 64)
- CHILD_MAX
- Maximum number of processes per user
- OPEN_MAX
- Maximum number of files a process can have open
- PAGE_SIZE
- System memory page size in bytes
- PATH_MAX
- Maximum length of a file path
- HOST_NAME_MAX
- Maximum length of a hostname
- _NPROCESSORS_ONLN
- Number of processors currently online
FAQ
What is the getconf command used for?
getconf retrieves system configuration variables defined by POSIX and system-specific extensions. These values represent system limits and capabilities that applications can query to adapt their behavior. Variables fall into two categories: system-wide values (like CHILD_MAX, PAGE_SIZE) and pathname-specific values (like PATH_MAX, NAME_MAX) that may vary by filesystem. This is useful for shell scripts that need to query system limits without hardcoding values, ensuring portability across different systems.
How do I run a basic getconf example?
Run `getconf -a` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -a do in getconf?
Display all configuration variables and their values