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Puppy Linux 5.10 desktop running in RAM. This is a list of Linux distributions that can be run entirely from a computer's RAM, meaning that once the OS has been loaded to the RAM, the media it was loaded from can be completely removed, and the distribution will run the PC through the RAM only.
In a popular Unix shell Bash, time is a special keyword, that can be put before a pipeline (or single command), that measures time of entire pipeline, not just a singular (first) command, and uses a different default format, and puts empty line before reporting times: $
– Linux Administration and Privileged Commands Manual: shell variant of sar, supporting the same flags as sar command which write a daily report in the /var/log/sa directory. – Linux Administration and Privileged Commands Manual: , similar to sar but can write its data in different formats (CSV, XML, etc.). This is useful to load ...
Other commands for assessing system performance include: uptime – the system reliability and load average; top – for an overall system view; vmstat – vmstat reports information about runnable or blocked processes, memory, paging, block I/O, traps, and CPU. htop – interactive process viewer
The magic SysRq key is a key combination understood by the Linux kernel, which allows the user to perform various low-level commands regardless of the system's state. It is often used to recover from freezes , or to reboot a computer without corrupting the filesystem . [ 1 ]
Displays memory usage. It is capable of displaying program size and status, memory in use, and internal drivers. It is an external command. The command is available in MS-DOS versions 4 and later and DR DOS releases 5.0 and later. [1] On earlier DOS versions the memory usage could be shown by running CHKDSK.
The chkdsk command on Windows XP. CHKDSK can be run from DOS prompt, Windows Explorer, Windows Command Prompt, Windows PowerShell or Recovery Console. [10] On Windows NT operating systems, CHKDSK can also check the disk surface for bad sectors and mark them (in MS-DOS 6.x and Windows 9x, this is a task done by Microsoft ScanDisk).
lspci is a command on Unix-like operating systems that prints ("lists") detailed information about all PCI buses and devices in the system. [1] It is based on a common portable library libpci which offers access to the PCI configuration space on a variety of operating systems.