Difference between revisions of "OPS435 Lecture 3 - Bash"
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* history command | * history command | ||
* ! command | * ! command | ||
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| + | User-define variables | ||
| + | * Setting | ||
| + | * Reading | ||
| + | |||
| + | Quoting & escaping | ||
| + | * Single quotes | ||
| + | * Double quotes | ||
| + | * Back quotes | ||
| + | * Escaping special characters | ||
Shell Expansions | Shell Expansions | ||
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** LANG=C;echo [A-Z]* | ** LANG=C;echo [A-Z]* | ||
* brace expansion examples | * brace expansion examples | ||
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** echo {1..5} | ** echo {1..5} | ||
** echo {a..m} | ** echo {a..m} | ||
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** echo $((2 + 2)) | ** echo $((2 + 2)) | ||
** x=$((5/2)) | ** x=$((5/2)) | ||
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Latest revision as of 13:40, 22 August 2017
Linux processes
- ps
- kill
- top
Using BASH History
- history command
- ! command
User-define variables
- Setting
- Reading
Quoting & escaping
- Single quotes
- Double quotes
- Back quotes
- Escaping special characters
Shell Expansions
- Pathname expansion examples
- ls abc*
- echo abc?
- LANG=C;echo [A-Z]*
- brace expansion examples
- echo {1..5}
- echo {a..m}
- touch file{1,2,3,4}
- touch file{1..4}
- touch file{2,4,6,8}
- mkdir ops435/{labs,notes}
- Tilde expansion examples
- echo ~
- Command substitution examples
- echo $(date)
- echo `date`
- Arithmetic expansion examples
- echo $((2 + 2))
- x=$((5/2))
