haas:spring2020:unix:projects
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| haas:spring2020:unix:projects [2020/01/26 10:36] – [Projects] wedge | haas:spring2020:unix:projects [2020/04/16 15:47] – [Projects] wedge | ||
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| + | | **pbx3** (bonus; due 20200226) | ||
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| + | | @lightgreen: | ||
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| ======Class Stats====== | ======Class Stats====== | ||
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| + | ======Week 3====== | ||
| + | * Variables (setting, accessing) | ||
| + | * Environment variables | ||
| + | * Basic scripting | ||
| + | * shabang | ||
| + | * return status (success, failure) | ||
| + | * ${?} is set to return status of recently run command | ||
| + | * bash, C, python scripts (based on shabang) | ||
| + | * command-line arguments | ||
| + | * ${0} is the name of the program being run (the script, as we called it) | ||
| + | * ${1} is the first argument | ||
| + | * ${2} is the second argument | ||
| + | * up through at least ${9} | ||
| + | * ${#} is the number of arguments | ||
| + | * ${*} is a string of all the arguments | ||
| ======Week 2====== | ======Week 2====== | ||
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| * stderr | * stderr | ||
| * filesystem organization | * filesystem organization | ||
| + | * pipes | ||
| + | * stdout of a command becomes stdin to next command | ||
| + | * do not use with interactive commands | ||
| + | * quotes | ||
| + | * full quote - literal quote, no expansions | ||
| + | * half quote - allows expansions | ||
| + | * back quote (back tick - command expansion) | ||
| ======Week 1====== | ======Week 1====== | ||
haas/spring2020/unix/projects.txt · Last modified: 2020/04/26 09:57 by wedge