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  2. diff - Wikipedia

    en.wikipedia.org/wiki/Diff

    In computing, the utility diff is a data comparison tool that computes and displays the differences between the contents of files. Unlike edit distance notions used for other purposes, diff is line-oriented rather than character-oriented, but it is like Levenshtein distance in that it tries to determine the smallest set of deletions and insertions to create one file from the other.

  3. xdelta - Wikipedia

    en.wikipedia.org/wiki/Xdelta

    Xdelta [3] is a command line tool for delta encoding, which stores or transmits the difference (deltas) between sequential data, instead of entire files.This is similar to diff and patch, except diff computes and shows the difference between two complete files, while patch is primarily designed for human-readable text files; Xdelta is designed for binary files and does not generate human ...

  4. List of GNU Core Utilities commands - Wikipedia

    en.wikipedia.org/wiki/List_of_GNU_Core_Utilities...

    Removes (deletes) files, directories, device nodes and symbolic links rmdir: Removes empty directories shred: Overwrites a file to hide its contents, and optionally deletes it sync: Flushes file system buffers touch: Changes file timestamps; creates file truncate: Shrink or extend the size of a file to the specified size vdir: Is exactly like ...

  5. File comparison - Wikipedia

    en.wikipedia.org/wiki/File_comparison

    Displaying the differences between two or more sets of data, file comparison tools can make computing simpler, and more efficient by focusing on new data and ignoring what did not change. Generically known as a diff [ 1 ] after the Unix diff utility , there are a range of ways to compare data sources and display the results.

  6. Comparison of file comparison tools - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_file...

    The difference is an exact number of quarters of an hour up to 95 (same minutes modulo 15 and seconds) if the file was transported across zones; there is also a one-hour difference within a single zone caused by the transition between standard time and daylight saving time (DST). Some, but not all, file comparison and synchronisation software ...

  7. Pipeline (Unix) - Wikipedia

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

    For example, to list files in the current directory , retain only the lines of ls output containing the string "key" , and view the result in a scrolling page , a user types the following into the command line of a terminal:

  8. cmp (Unix) - Wikipedia

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

    In computing, cmp is a command-line utility on Unix and Unix-like operating systems that compares two files of any type and writes the results to the standard output.By default, cmp is silent if the files are the same; if they differ, the byte and line number at which the first difference occurred is reported.

  9. Bash (Unix shell) - Wikipedia

    en.wikipedia.org/wiki/Bash_(Unix_shell)

    Because of these and other differences, Bash shell scripts are rarely runnable under the Bourne or Korn shell interpreters unless deliberately written with that compatibility in mind, which is becoming less common as Linux becomes more widespread. But in POSIX mode, Bash conforms with POSIX more closely. [87] Bash supports here documents.