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Latest change: May 25 15:00:21 2018 |
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Latest article: |
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2018-03-08 article-script-survival.md: |
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% date: 2018-03-08 |
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POSIX Shell Scripting Survival Guide |
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==================================== |
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Authors: ulcer <[email protected]> |
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License: CC-BY-SA 4.0 |
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Published: 2018-03-08 |
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Updated: 2018-05-08 |
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Link: gopher://sdf.org/0/users/ulcer/kb/kb/article-script-survival.md |
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Mirror: https://uuuuu.github.io/article-script-survival.txt |
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Buy me cookies: https://patreon.com/ulcer |
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Table of contents: |
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1. Introduction |
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1.1. Note on shells: bourne shell syntax, bashisms and POSIX |
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1.2. Tools of trade: BSD userland, GNU coreutils |
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1.3. Shell scripting limitations |
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2. Scripting basics |
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2.1. echo vs printf and few more details |
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2.2. Variables, eval and quotation |
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2.3. Conditions and loops: if, while |
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2.4. Options parsing and validation: getopt vs getopts, case |
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2.5. Life without arrays |
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2.6. Change file |
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2.7. Check lock |
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3. Commentary on tools |
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3.1. Working with pipes: stdbuf and pv |
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3.2. Notes on grep |
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3.3. Notes on sed |
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3.4. Notes on awk |
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3.5. Notes on portable syntax |
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3.6. Notes on UTF-8 compatibility |
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3.7. Working with XML and HTML: curl, tidy, xmlstarlet and others |
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3.8. Working with JSON: jq |
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3.9. Working with CSV: miller |
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4. Advanced topics |
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4.1. Reading user input |
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4.2. Internal field separator |
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4.3. Command line options manupulation |
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4.4. Nested constructions difficulties and recursion |
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4.5. Libraries and trap cascading |
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4.6. Debugging |
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4.7. Testing and deploying in new environment |
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4.8. Networking with shell |
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4.9. Paste safety |
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5. Further reading |
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6. References |
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7. Changelog |
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