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Berkeley Software Distribution (BSD)

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BSD, BSD Unix, Berkeley Unix

The Berkeley Software Distribution (BSD) represents a family of UNIX-like operating systems based on the source code from the University of California, Berkeley. Originating in the late 1970s and early 1980s, BSD has significantly influenced the development of numerous other systems, including the creation of FreeBSD, OpenBSD, and NetBSD. Its innovations include the TCP/IP networking protocol stack, the Vi text editor, and the C shell (csh), among others.

These variants prioritize different goals, such as FreeBSD focusing on performance and compatibility, OpenBSD emphasizing security, and NetBSD being designed for portability across different hardware platforms. The BSD license itself, known for its permissiveness, has allowed wide-ranging use and modification of its code, fostering innovation and contributing to the development of many other open-source projects. Over the years, BSD and its derivatives have been known for their reliability, robustness, and adherence to UNIX standards, making them favored choices in server environments, networking applications, and embedded systems.

Snippet from Wikipedia: Berkeley Software Distribution

The Berkeley Software Distribution (BSD), also known as Berkeley Unix, is a discontinued Unix operating system developed and distributed by the Computer Systems Research Group (CSRG) at the University of California, Berkeley. First released in 1978, it began as an improved derivative of AT&T's original Unix developed at Bell Labs, based on the source code. Over time, BSD evolved into a distinct operating system and played a significant role in computing and the development and dissemination of Unix-like systems.

BSD development was initially led by Bill Joy, who added virtual memory capability to Unix running on a VAX-11 computer. During the 1980s, BSD gained widespread adoption by workstation vendors in the form of proprietary Unix distributions—such as DEC with Ultrix and Sun Microsystems with SunOS—due to its permissive licensing and familiarity among engineers. BSD also became the most widely used Unix variant in academic institutions, where it was used for the study of operating systems. The BSD project received funding from DARPA until 1988, during which time BSD incorporated ARPANET support and later implemented the TCP/IP protocol suite, released as part of BSD NET/1 in 1988. By that time, the codebase had diverged significantly from the original AT&T Unix, with estimates suggesting that less than 5% of the code remained from AT&T. As a result, NET/1 was distributed without requiring an AT&T source license.

Berkeley ended its Unix research in 1992, following reduced funding and complications arising from the Unix copyright lawsuit. As the original BSD became obsolete, the term "BSD" came to refer primarily to its open-source descendants, including FreeBSD, OpenBSD, NetBSD, and DragonFly BSD. BSD-derived code also formed the basis for Darwin and TrueOS; these, in turn, have been incorporated into proprietary operating systems, including Apple's macOS and iOS, as well as Microsoft Windows which used portions of BSD's TCP/IP implementation. Code from BSD's open descendants have themselves also been integrated into various modern platforms, including the system software for the PlayStation 5 and other embedded or commercial devices.

Linux:

Linux, kernel, systemd, init, GRUB (GRand Unified Bootloader), initramfs, ext4 (Fourth Extended Filesystem), XFS, Btrfs (B-Tree File System), zram, zswap, cgroups (Control Groups), namespaces, selinux (Security-Enhanced Linux), AppArmor, iptables, nftables, firewalld, auditd, journald, syslog, logrotate, dmesg, udev, eBPF (Extended Berkeley Packet Filter), KVM (Kernel-based Virtual Machine), QEMU (Quick Emulator), VirtIO, LXC (Linux Containers), Docker, Podman, CRI-O, Kubernetes Integration, etcd, Linux Control Groups, LXD (Linux Daemon), Snap, Flatpak, AppImage, RPM (Red Hat Package Manager), dpkg (Debian Package Manager), APT (Advanced Package Tool), YUM (Yellowdog Updater, Modified), DNF (Dandified YUM), Pacman, Zypper, Portage, emerge, Nix, pkg-config, ldconfig, make, cmake, autoconf, automake, configure, GCC (GNU Compiler Collection), Clang, glibc (GNU C Library), musl, libstdc++, libc, binutils, GNU Coreutils, Bash (Bourne Again Shell), Zsh (Z Shell), Fish Shell, dash, sh, SSH (Secure Shell), sshd (SSH Daemon), scp (Secure Copy), rsync, SCP (Secure Copy Protocol), wget, curl, ftp, sftp, TFTP (Trivial File Transfer Protocol), NFS (Network File System), CIFS (Common Internet File System), Samba, autofs, mount, umount, lsblk, blkid, parted, fdisk, gdisk, mkfs, fsck, tune2fs, xfs_repair, btrfs-progs, mdadm (Multiple Device Admin), RAID (Redundant Array of Independent Disks), LVM (Logical Volume Manager), thin provisioning, lvcreate, lvremove, vgcreate, vgremove, pvcreate, pvremove, multipath-tools, ISCSI (Internet Small Computer Systems Interface), nvme-cli, dm-crypt, cryptsetup, LUKS (Linux Unified Key Setup), dracut, GRUB Customizer, PXE (Preboot Execution Environment), tftpboot, Syslinux, LiveCD, LiveUSB, mkbootdisk, dd, cpio, tar, gzip, bzip2, xz, 7zip, zstd, rsyslog, sysctl, lsmod, modprobe, depmod, modinfo, insmod, rmmod, kmod, dkms (Dynamic Kernel Module Support), kernel tuning, kernel headers, kernel modules, patch, diff, strace, ltrace, ptrace, perf, htop, top, iotop, atop, vmstat, mpstat, sar, dstat, iostat, uptime, free, df, du, ps, pidstat, nice, renice, kill, pkill, killall, jobs, bg, fg, wait, nohup, screen, tmux, cron, crontab, at, anacron, systemctl, service, chkconfig, rc-update, update-rc.d, ntpd (Network Time Protocol Daemon), chronyd, hwclock, timedatectl, ntpdate, ufw (Uncomplicated Firewall), iptables-save, iptables-restore, fail2ban, denyhosts, tcp_wrappers, libcap, setcap, getcap, auditctl, ausearch, kernel parameters, boot parameters, sysfs, procfs, debugfs, tmpfs, ramfs, overlayfs, aufs, bind mounts, chroot, pivot_root, overlay2, network namespaces, bridge-utils, iproute2, ip, ifconfig, route, netstat, ss, arp, ping, traceroute, mtr, tcpdump, ngrep, nmap, arp-scan, ethtool, iwconfig, iw, wpa_supplicant, hostapd, dnsmasq, networkmanager, nmcli, nmtui, system-config-network, dhclient, dhcpd, isc-dhcp-server, bind9, named, unbound, nslookup, dig, resolvconf, iptables, nftables, firewalld, conntrack, ipset, snort, suricata, tcp_wrappers, rkhunter, chkrootkit, clamav, lynis, openvpn, strongswan, libreswan, openconnect, network namespaces, virtual ethernet, veth, tap interfaces, tun interfaces, vlan, bridge, brctl, ovs-vsctl, openvswitch, macvlan, ipvlan, bonding, teamd, network teaming, multipath, multipath-tools, route tables, ip rule, ip route, policy routing, qos, tc (Traffic Control), htb, fq_codel, cake, iptables NAT, iptables MASQUERADE, squid, socks5, privoxy, tor, iptables DNAT, iptables SNAT, iptables REDIRECT, conntrack, stateful firewall, stateless firewall, tcp_window_scaling, tcp_timestamps, tcp_sack, tcp_rmem, tcp_wmem, tcp_no_metrics_save, tcp_ecn, netem, ip6tables, ipset, ebtables, arptables, bridge-nf, br_netfilter, openvswitch, gre tunnels, ipip tunnels, vxlan, gretap, macsec, macvlan, ipvlan, wireguard, strongswan, libreswan, xfrm, ipsec, isakmpd, racoon, openswan, ikev2, ikev1, vpn tunnels, gre tunnels, vxlan tunnels, fou tunnels, ipip tunnels.

Linux Core Utilities commands - GNU Core Utilities command-line interface programs

This list should really only include standard universal commands that come with GNU Core Utilities.

Linux File system commands

Linux Text utilities:

Linux Shell utilities:

Unix Commands:

This should really only include standard universal commands that come with all Linux distributions adhering to the Single UNIX Specification.

Really this is “Unix programs”, since there are no commands in Unix, they are programs except for shell builtins.

Unix command-line interface programs and shell builtins:

Unix File system commands:

Unix process commands:

Unix user environment commands:

 [[env]]

Unix text processing commands:

Unix shell builtin commands:

 [[alias (command) ]] | [[ alias]]

Unix networking commands:

Note: Networking is not part of SUS

Unix network utility commands:

Unix searching commands:

Unix documentation commands:

Unix software development commands: Note: There are a huge number of Linux software development tools / Unix software development tools; this list should be restricted to ones that are standardized as part of Unix, i.e., those marked SD, CD], or FD (http://pubs.opengroup.org/onlinepubs/9699919799/help/codes.html) within the Unix/POSIX specifications

Unix miscellaneous commands:

See also

References

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