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  2. List of POSIX commands - Wikipedia

    en.wikipedia.org/wiki/List_of_POSIX_commands

    file: Filesystem Mandatory Determine file type Version 4 AT&T UNIX find: Filesystem Mandatory Find files Version 1 AT&T UNIX fold: Text processing Mandatory Filter for folding lines 1BSD fuser: Process management Optional (XSI) List process IDs of all processes that have one or more files open System V gencat: Misc Mandatory

  3. find (Unix) - Wikipedia

    en.wikipedia.org/wiki/Find_(Unix)

    The possible search criteria include a pattern to match against the filename or a time range to match against the modification time or access time of the file. By default, find returns a list of all files below the current working directory, although users can limit the search to any desired maximum number of levels under the starting directory.

  4. lsof - Wikipedia

    en.wikipedia.org/wiki/Lsof

    for all files in use by the process, including the executing text file and the shared libraries it is using: the file descriptor number of the file, if applicable; the file's access mode; the file's lock status; the file's device numbers; the file's inode number; the file's size or offset; the name of the file system containing the file;

  5. grep - Wikipedia

    en.wikipedia.org/wiki/Grep

    Before it was named, grep was a private utility written by Ken Thompson to search files for certain patterns. Doug McIlroy , unaware of its existence, asked Thompson to write such a program. Responding that he would think about such a utility overnight, Thompson actually corrected bugs and made improvements for about an hour on his own program ...

  6. Regular expression - Wikipedia

    en.wikipedia.org/wiki/Regular_expression

    He later added this capability to the Unix editor ed, which eventually led to the popular search tool grep's use of regular expressions ("grep" is a word derived from the command for regular expression searching in the ed editor: g/re/p meaning "Global search for Regular Expression and Print matching lines"). [15]

  7. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    PuTTY-User-Key-File-3: 0 ppk PuTTY private key file version 3 2D 2D 2D 2D 2D 42 45 47 49 4E 20 4F 50 45 4E 53 53 48 20 50 52 49 56 41 54 45 20 4B 45 59 2D 2D 2D 2D 2D-----BEGIN OPENSSH PRIVATE KEY-----0 OpenSSH private key file 2D 2D 2D 2D 2D 42 45 47 49 4E 20 53 53 48 32 20 4B 45 59 2D 2D 2D 2D 2D-----BEGIN SSH2 PUBLIC KEY-----0 pub OpenSSH ...

  8. Shell script - Wikipedia

    en.wikipedia.org/wiki/Shell_script

    Editing a FreeBSD shell script for configuring ipfirewall. A shell script is a computer program designed to be run by a Unix shell, a command-line interpreter. [1] The various dialects of shell scripts are considered to be command languages.

  9. findstr - Wikipedia

    en.wikipedia.org/wiki/Findstr

    [drive:][path]filename Specifies a file or files to search. Flags: /B Matches pattern if at the beginning of a line. /E Matches pattern if at the end of a line. /L Uses search strings literally. /R Uses search strings as regular expressions. /S Searches for matching files in the current directory and all subdirectories.