January 2001
Intermediate to advanced
480 pages
7h 22m
English
Content preview from Korn Shell: Unix and Linux Programming Manual, Third Edition, The
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Misc Substitution
| $(command) | replace with the standard output of command |
| $((arithmetic-expression) | replace with the result of arithmetic-expression |
| $(<file) | replace with the contents of file |
| `command ` | replace with the standard output of command |
| ∼ | replace with $HOME |
| ∼user | replace with the home directory of user |
| ∼– | replace with $OLDPWD (previous directory) |
| ∼+ | replace with $PWD (current directory) |
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.