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batch: Execute commands when system load is low
The batch command waits until the system's average load drops below 0.8, and then executes the specified commands. This is useful for efficiently using system resources and handling background tasks without interfering with critical operations.
bg: Resume suspended jobs in the background
The `bg` command is used to resume jobs that were suspended with `Ctrl+Z` in the background. It is useful when you need to continue a job without occupying the terminal.
fg: Bring Background Jobs to Foreground
The `fg` command is used to bring a job running in the background or suspended to the foreground, reactivating it. It is useful when you need to see the job's output in the terminal or regain user input.
fuser: Find processes using files or sockets
The fuser command is used to identify the PIDs of processes that are using a specific file, filesystem mount point, or network socket. This is useful for system administrators to find and terminate processes that are locking resources or to troubleshoot issues.
htop Command Guide: Enhanced Interactive Process Viewer
`htop` is an interactive process viewer used for monitoring running processes and system resource usage in real-time on Linux systems. It provides a much more user-friendly interface and powerful features compared to the traditional `top` command, making it a widely recommended tool for system performance analysis and troubleshooting. In this guide, you will learn how to install `htop`, its key features, and how to use it effectively.
jobs: Manage Background Jobs
The `jobs` command is used to check the status of background jobs running in the current shell. It displays the job number, status, command, and more, allowing for efficient management of multiple tasks.
Guide to the kill Command: Terminating Processes
`kill` command is used to send signals to processes running on a Linux system to control them. It is primarily used to terminate (kill) processes, but it can also send other types of signals to modify the behavior of the processes. Through this guide, learn the basic usage of the `kill` command and how to utilize various signals.
killall: Terminate processes by name
The killall command sends a signal to all running processes with a specified name. This is useful for terminating all instances of a particular application or service at once. By default, it sends the SIGTERM signal, but you can specify other signals as well.
killall5: Send a signal to all processes
killall5 is a command that sends a specified signal to all processes on the system (except for the init process). It is primarily used during system shutdown or reboot and can be very powerful and dangerous, so it should be used with caution.
ltrace: Trace Library Calls
ltrace is a utility used to trace and log the calls made by a program to dynamic libraries. It allows you to see which library functions are called, with what arguments, and what their return values are, making it useful for debugging, performance analysis, and reverse engineering.
pgrep: Find Process IDs
The `pgrep` command searches through the list of running processes based on specific criteria (e.g., process name, user, full command line) and outputs the Process IDs (PIDs) of those processes. This is more efficient and convenient than combining the `ps` and `grep` commands to find the desired processes.
pkill: Terminate/Signal Processes by Name
pkill is a command that sends signals to processes based on their name or other attributes. It is similar to `pgrep`, but it directly sends signals to the found processes. It is useful for terminating or restarting all processes with a specific name at once.