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sed Command Guide: Utilizing the Stream Editor
`sed` (stream editor) is a powerful non-interactive text processing tool used for editing text streams (inputs delivered through files or pipes). It allows you to efficiently search, replace, delete, or insert text without opening files, making it essential for automated text transformations in shell scripts. Through this guide, you will learn the basic usage of the `sed` command and advanced features using regular expressions.
set: Set and Unset Shell Options
The `set` command is used to set or unset various options that control the behavior of the current shell. It is an essential command for improving script stability and debugging efficiency. It can also be used to set positional parameters.
sftp: Secure File Transfer Tool
The `sftp` command is an interactive command-line client for securely transferring files over SSH (Secure Shell). Unlike `ftp`, it encrypts all communications, providing superior security, and is used to upload, download, and manage files between a local and a remote server.
sh: Shell Script Execution and Command Interpretation
`sh` is a Bourne shell-compatible command interpreter. It is used to execute scripts or process commands interactively. On most Linux systems, `/bin/sh` is a symbolic link to another shell like `bash` or `dash`, providing a script execution environment that adheres to the POSIX standard.
shutdown: Safely Shutting Down Your System
The `shutdown` command is used to safely shut down or reboot the system. It notifies all users of the shutdown at a specified time and gracefully terminates all processes to prevent data loss.
sleep: Wait for a Specified Duration
The `sleep` command is used to temporarily suspend the execution of the system for a specified duration (seconds, minutes, hours, days). It is useful for creating intervals between tasks in scripts or terminals, or for waiting until a specific task completes.
Guide to the sort Command: Sorting Text Files
`sort` command is used to sort lines of text files or data received from standard input. It can sort data in various orders such as alphabetical, numerical, or reverse order, making it very useful for log file analysis, data preparation, and report generation. Use this guide to learn the basic usage of the `sort` command and its various sorting options.
split: Split Files into Smaller Pieces
The split command is used to split large files into smaller files based on size or line count. This is very useful when dealing with large files, transferring them over a network, or when you only need to process specific parts.
ss Command Guide: Checking Socket Statistics (netstat Alternative)
`ss` command (socket statistics) is a powerful and modern utility used to check network socket-related information on Linux systems. It replaces the older `netstat` command, providing faster, more detailed, and efficient socket information. It is an essential tool for monitoring network activities and troubleshooting issues, such as network connection status, listening ports, and routing tables. Use this guide to learn various applications of the `ss` command.
SSH (Secure Shell) Command Guide
SSH (Secure Shell) is a network protocol that allows secure access to remote computers and the execution of commands. It provides data security through encrypted communication and is used for various purposes such as remote server management and file transfer. Use this guide to learn about the main features and usage of SSH.
ssh-keygen: Generate and Manage SSH Key Pairs
ssh-keygen is a utility used to generate, manage, and convert OpenSSH authentication key pairs (public and private keys). It is a core tool for securely connecting to remote servers via SSH or authenticating with services like Git.
sshfs: Mount Remote File Systems via SSH
sshfs is a client that allows you to mount a directory from a remote server onto your local file system using the SSH File Transfer Protocol. This enables you to browse and edit remote files as if they were on a local disk. It operates based on FUSE (Filesystem in Userspace).