How can you determine the process's RAM usage in Linux?

In Linux, there are several ways to determine the memory usage of a process:

1. The ps command — shows information about processes, including memory usage:

ps aux | grep <process_name>

The RSS (Resident Set Size) column shows the amount of physical memory used in kilobytes.

2. The top or htop commands — interactive utilities for monitoring processes and their resource consumption, including memory.

3. The /proc/[pid]/status or /proc/[pid]/statm files — contain detailed information about a specific process's memory. For example:

cat /proc/<pid>/status | grep VmRSS

shows the current amount of physical memory used.

4. The pmap command — displays the memory map of a process:

pmap <pid>

5. Utilities like smem or pidstat — for more detailed memory usage analysis.

These methods allow obtaining both overall and detailed views of a process's memory usage.