| Simplified Manual Pages |
The standard set of manual pages (often called man pages) which are available in most flavours of Linux, BSD and Unix tend to be long and they can be cryptic. Manual pages tend to list what options are available without explaining why we might use them. Further, many manual pages do not provide examples.
The TLDR-pages project has compiled a collection of simplified manual pages which present commands with a clear explanation of what each command does and lists examples of how the command is most often used. These simplified pages are available below.
sha256sum
Calculate SHA256 cryptographic checksums.
More information: home page
- Calculate the SHA256 checksum for one or more files:
sha256sum path/to/file1 path/to/file2 ...
- Calculate and save the list of SHA256 checksums to a file:
sha256sum path/to/file1 path/to/file2 ... > path/to/file.sha256
- Calculate a SHA256 checksum from `stdin`:
command | sha256sum
- Read a file of SHA256 checksums and filenames and verify all files have matching checksums:
sha256sum [-c|--check] path/to/file.sha256
- Only show a message for missing files or when verification fails:
sha256sum [-c|--check] --quiet path/to/file.sha256
- Only show a message when verification fails, ignoring missing files:
sha256sum --ignore-missing [-c|--check] --quiet path/to/file.sha256
- Check a known SHA256 checksum of a file:
echo known_sha256_checksum_of_the_file path/to/file | sha256sum [-c|--check]
The TLDR manual pages are distributed under the
Creative Commons Attribution 4.0 International License (CC-BY).
The project's scripts are licensed under the MIT license:
The MIT License (MIT)
Copyright (c) 2014 the TLDR team and contributors.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
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