prlimit:tldr:f0ebe

The "prlimit" command is used to set or retrieve resource limits for a process or a group of processes.

Resource limits define the maximum amount of system resources that a process can consume. These resources can include memory, CPU usage, number of open files, and more. By setting resource limits, administrators can control and allocate resources effectively, preventing processes from monopolizing system resources and causing issues.

The syntax of the "prlimit" command varies depending on the operating system, but typically follows this pattern:

prlimit [options] <pid | command>

Here, "" refers to the process ID of the target process, and "" refers to the command whose resource limits will be set before execution.

The available options may vary but generally include:

• "–n" or "--nofile": Sets the maximum number of open files that a process can have.
• "–c" or "--core": Specifies the maximum size (in bytes) of core dump files generated by the process.
• "–d" or "--data": Sets the maximum size (in bytes) of the data segment.
• "–f" or "--fsize": Specifies the maximum size (in bytes) of files created by the process.
• "–m" or "--memlock": Sets the maximum number of bytes of memory that can be locked in RAM (mlock) by the process.
• "–p" or "--proc": Sets the maximum number of processes the target process can create.
• "–r" or "--rss": Specifies the maximum resident set size (in bytes) of the process.
• "–s" or "--stack": Sets the maximum size (in bytes) of the stack segment.
• "–t" or "--cpu": Specifies the maximum amount of CPU time (in seconds) that the process can consume.

By using the "prlimit" command, system administrators can improve system stability, optimize resource allocation, and prevent resource-related issues caused by processes exceeding predefined limits.