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  2. Bad command or file name - Wikipedia

    en.wikipedia.org/wiki/Bad_command_or_file_name

    "foo" is not recognized as an internal or external command, operable program or batch file. Some early Unix shells produced the equally cryptic " foo: no such file or directory " again accurately describing what is wrong but confusing users.

  3. Host protected area - Wikipedia

    en.wikipedia.org/wiki/Host_protected_area

    The ATA command that these entities use is called READ NATIVE MAX ADDRESS. This command accesses a register that contains the true size of the hard drive. To use the area, the controlling HPA-aware program changes the value of the register read by IDENTIFY DEVICE to that found in the register read by READ NATIVE MAX ADDRESS.

  4. Terminal multiplexer - Wikipedia

    en.wikipedia.org/wiki/Terminal_multiplexer

    A terminal multiplexer can be thought of as a text version of graphical window managers, or as a way of putting attach virtual terminals to any login session.It is a wrapper that allows multiple text programs to run at the same time, and provides features that allow the user to use the programs within a single interface productively.

  5. sudo - Wikipedia

    en.wikipedia.org/wiki/Sudo

    sudo (/ s uː d uː / [4]) is a program for Unix-like computer operating systems that enables users to run programs with the security privileges of another user, by default the superuser. [5] It originally stood for "superuser do", [ 6 ] as that was all it did, and this remains its most common usage; [ 7 ] however, the official Sudo project ...

  6. Ghost (disk utility) - Wikipedia

    en.wikipedia.org/wiki/Ghost_(disk_utility)

    Initially, GHOST supported only the FAT file system, but could only copy (not resize) other file systems by performing a sector-by-sector transfer. GHOST added support for NTFS later in 1996, and also provided a program, Ghostwalker, to change the Security ID (SID) that made Windows NT systems distinguishable from each other.

  7. Yacc - Wikipedia

    en.wikipedia.org/wiki/Yacc

    Yacc (Yet Another Compiler-Compiler) is a computer program for the Unix operating system developed by Stephen C. Johnson.It is a lookahead left-to-right rightmost derivation (LALR) parser generator, generating a LALR parser (the part of a compiler that tries to make syntactic sense of the source code) based on a formal grammar, written in a notation similar to Backus–Naur form (BNF). [1]

  8. End-of-Transmission character - Wikipedia

    en.wikipedia.org/wiki/End-of-transmission_character

    The EOT character is used in legacy communications protocols by mainframe computer manufacturers such as IBM, Burroughs Corporation, and the BUNCH.Terminal transmission control protocols such as IBM 3270 Poll/Select, or Burroughs TD830 Contention Mode protocol use the EOT character to terminate a communications sequence between two cooperating stations (such as a host multiplexer or Input ...

  9. lsof - Wikipedia

    en.wikipedia.org/wiki/Lsof

    lsof is a command meaning "list open files", which is used in many Unix-like systems to report a list of all open files and the processes that opened them. This open source utility was developed and supported by Victor A. Abell, the retired Associate Director of the Purdue University Computing Center.