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| PDF Title : | Bash Pocket Reference |
|---|---|
| Total Page : | 155 Pages |
| Author: | Arnold Robbins |
| PDF Size : | 804 KB |
| Language : | English |
| Publisher : | oreilly.com |
| PDF Link : | Available |
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Bash Pocket Reference – Help for power s and sys s – Book
This “double-scanning” is useful any time shell variables contain input/output redirection symbols, aliases, or other shell vari‐ ables. (For example, redirection normally happens before vari‐ able expansion, so a variable containing redirection symbols must be expanded first using eval; otherwise, the redirection symbols remain uninterpreted.)