https://github.com/bsteen/simple-scripts

A collection of simple but useful Bash scripts so I don't have to remember the commands.
https://github.com/bsteen/simple-scripts

avi bash bash-script checksum combine djvu hash markdown pdf sha256 shred shred-files utility-scripts video-converter webm

Last synced: 4 months ago
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A collection of simple but useful Bash scripts so I don't have to remember the commands.

• Host: GitHub
• URL: https://github.com/bsteen/simple-scripts
• Owner: bsteen
• License: mit
• Created: 2020-04-19T16:30:21.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2025-01-11T19:00:24.000Z (12 months ago)
• Last Synced: 2025-07-11T21:35:45.760Z (6 months ago)
• Topics: avi, bash, bash-script, checksum, combine, djvu, hash, markdown, pdf, sha256, shred, shred-files, utility-scripts, video-converter, webm
• Language: Shell
• Homepage:
• Size: 90.8 KB
• Stars: 2
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# simple-scripts

A collection of simple but useful Bash scripts so I don't have to remember the commands. Most scripts deal with `.pdf` or video file manipulation/conversion. Some scripts have become less "simple" over time as I add more functionality, but my goal is to make the code easy to understand over making it compact or efficient.

See [`LICENSE`](LICENSE) for details.

# PDF Scripts

* `djvu2pdf.sh`

    * Convert `.djvu` to `.pdf`

    * Requires [`ddjvu`](https://linux.die.net/man/1/ddjvu)

* `pdf2png.sh`

    * Convert `.pdf` to a set of `.png`s

* `pdf2png2pdf.sh`

    * Convert `.pdf` to `.png` and then back to `.pdf`

    * Useful for stripping hyperlinks and searchable text in PDFs

    * Requires [`imagemagick`](https://linux.die.net/man/1/imagemagick)

* `pdfcombine.sh`

    * Combine multiple `.pdf` files into a single `.pdf`

    * Requires [`pdftk`](https://linux.die.net/man/1/pdftk)

# Video Scripts

* `avcomb.sh`

    * Combine the audio stream of video 1 with the video stream of video 2

    * Requires [`ffmpeg`](https://linux.die.net/man/1/ffmpeg)

* `to-webm.sh`

    * Converts a video container file (e.g. .mp4) to .webm format

    * Requires [`ffmpeg`](https://linux.die.net/man/1/ffmpeg)

* `vid2avi.sh`

    * Convert a compatible video container file to `.avi` while trying to maintain good quality

    * Requires [`ffmpeg`](https://linux.die.net/man/1/ffmpeg)

# Other Scripts

* `2iso.sh`

   * Converts a single file or folder into a `.iso` file

   * Requires `mkisofs`

* `hashmd.sh`

    * Calculates the checksum/hashes of all the files in a folder and generates a Markdown-style table of the results.

    * Requires `libarchive-zip-perl`

    * See an example of the tables generated [here](https://bsteen.github.io/hashes.html)

* `randstr.sh`

    * Get 128 bytes of random data from `/dev/urandom` and print visible ASCII characters only

    * Passing `-a` makes only alpha-numeric characters print

    * Passing `-A` makes only alpha-numeric characters print, excluding O0lI

* `sha256-check.sh`

    * `--check` if the calculated SHA256 sum of file equals the provided SHA256 sum string

    * Saves you from making a formatted file with the sum and filename then running `sha256sum --check ...`

    * Usage: `./sha256-check.sh  `

* `shredu.sh`

    * Overwrites the specified file(s) with random data, then with all zeros, and then removes the file(s)

    * **Has option to recursively shred all files in directory: `-r`**

    * Uses the [`shred`](https://linux.die.net/man/1/shred) command

* `upgrade.sh`

    * Fetch and update packages; then remove old packages

    * Uses `apt-get` package manager