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| # Single Quote ('') vs Double Quote("") | |
| Enclosing characters in single quotes (‘'’) preserves the literal value of each character within the quotes. A single quote may not occur between single quotes, even when preceded by a backslash. | |
| [https://www.gnu.org/software/bash/manual/html_node/Double-Quotes.html#Double-Quotes] | |
| # Sort directories by size and print | |
| du -h --max-depth=1 | sort -hr | |
| # Setup ssh key based access | |
| ssh-copy-id user@host |
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