2024-10-05 19:05:51 +02:00
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# Linux
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2024-10-09 18:14:09 +02:00
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Operating Systems pages.
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Contains Linux system management information.
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## ____________________
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2024-10-05 19:05:51 +02:00
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2024-10-09 18:14:09 +02:00
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### Sysadmin commands
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2024-10-05 19:05:51 +02:00
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| Command | Description |
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| alias | Create an alias for Linux commands. It’s a shorthand way to customize and streamline your commands |
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| apropos | Search man page names and descriptions. |
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| atop | For Linux server performance analysis. |
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| awk | A powerful pattern scanning and processing language. It’s used to manipulate data and generate |
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| blkid | command-line utility to locate/print block device attributes. |
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| btop | C++ version and continuation of bashtop and bpytop. |
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| bzip2 | similar to gzip. It uses a different compression algorithm. |
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| cat | display file contents. |
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| cd | directory navigation. |
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| cheat | allows you to create and view interactive cheatsheets on the command line.” |
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| chmod | change the access permissions of file system objects. |
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| chown | change file owner and group. |
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| chpassword | allows users to change the password for various user accounts. |
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| chroot | run command or interactive shell with a special root directory. |
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| clear | clears the screen of the terminal. |
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| cp | copying files and folders. |
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| cron | set up scheduled tasks to run. |
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| crontab | Schedule commands to run periodically at fixed times, dates, or intervals with the cron da |
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| dd | convert and copy files. |
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| df | display disk space usage. |
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| diff | Compare files line by line. It’s particularly useful for comparing text files such as scripts |
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| dmesg | prints the message buffer of the kernel ring. |
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| dstat | view processes, memory, paging, I/O, CPU, etc., in real-time. All-in-one for vmstat, iostat |
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| du | estimate file space usage. |
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| env | Run a command in a modified environment. |
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| fdisk | manipulate the disk partition table. |
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| find | locates files based on some user-specified criteria. |
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| free | display memory usage. |
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| fsck | tool for checking the consistency of a file system. |
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| Glances and nmon | htop and top Alternatives: |
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| grep | Search a file for a pattern of characters, then display all matching lines. |
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| gzip | file compression and decompression. |
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| history | used to view the previously executed commands. |
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| htop | interactive process viewer and manager. |
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| iostat | for storage I/O statistics. |
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| iotop | interactive I/O viewer. Get an overview of storage r/w activity. |
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| ip | from Iproute2, a collection of utilities for controlling TCP/IP networking and traffic control |
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| journalctl | query the systemd journal. |
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| kill | terminate a process. |
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| killall | Sends a kill signal to all instances of a process by name. |
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| last | show a listing of last logged-in users. |
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| less | similar to the more command with additional features. |
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| ln | Make links between files. By creating a link, you can access the linked file by more than one p |
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| locate | search files in Linux. |
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| ls | list directory contents. |
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| lspci | List all PCI devices. This is particularly useful for diagnosing hardware and system problem |
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| lsusb | List USB devices. Similar to lspci, but for USB hardware connected to the system. |
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| man | for reading system reference manuals. |
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| mkdir | create or make new directories. |
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| mkfs | build a Linux file system. |
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| more | display file contents one screen/page at a time. |
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| mount / umount | provides access to an entire filesystem in one directory. |
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| mv | moving files and folders. |
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| nc | command-line networking utility. (Also, see 60 Linux Networking commands and scripts.) |
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| ncdu | a disk utility for Unix systems. |
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| netstat | for network statistics. |
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| nohup | Run Commands in the Background. |
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| parted | for creating and manipulating partition tables. |
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| passwd | change a user’s password. |
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| ps | information about the currently running processes. |
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| pstree | display a tree of processes. |
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| pwd | shows your current directory location. |
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| rm | removing files and folders. |
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| rsync | remote file transfers and syncing. |
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| sar | collects, reports, and saves system activity information, including CPU, memory, disk, and ne |
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| scp | securely Copy Files Using SCP, with examples. |
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| screen | hold a session open on a remote server. (also a full-screen window manager) |
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| sed | A stream editor used to perform basic text transformations on an input stream (a file or input |
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| sleep | suspends program execution for a specified time. |
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| sof | List open files and the corresponding processes. This command is invaluable for troubleshootin |
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| ssh | secure command-line access to remote Linux systems. |
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| sudo | execute commands with administrative privilege. |
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| systemctl | central management tool for controlling the init system. |
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| tac | output file contents, in reverse. |
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| tail | used to display the tail end of a text file or piped data. |
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| tar | an archiving utility. |
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| tldr | Collaborative cheatsheets for console commands. |
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| tmux | a terminal multiplexer. |
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| top | shows an overall system view. |
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| touch | used to update the access date and modification date of a computer file or directory. |
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| umask | set file mode creation mask. |
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| uptime | shows system uptime and load average. |
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| useradd | create a new user or update default new user information. |
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| userdel | used to delete a user account and all related files. |
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| usermod | used to modify or change any attributes of an existing user account. |
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| vi | text editor. |
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| vmstat | shows system memory, processes, interrupts, paging, block I/O, and CPU info. |
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| w | show a list of currently logged-in user sessions. |
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| wait | Suspend script execution until all jobs running in the background have been terminated. |
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| watch | Execute a program periodically, showing output fullscreen. It’s useful for monitoring comman |
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| whois | client for the whois directory service. |
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| zip | for packaging and compressing (to archive) files. |
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| uname | Show system information (arch, linux version) |
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