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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Rsh Only
Rsh is used to set up login names and execution environments whose capabilities are more controlled than those of the standard shell. The actions of rsh are identical to those of sh, except that the following are disallowed:
- changing directory (see cd(1))
- setting or unsetting the value or attributes of SHELL, ENV, or PATH
- specifying path or command names containing /
- redirecting output (>, >|, <>, and >>)
- adding or deleting built-in commands
The restrictions above are enforced after .profile and the ENV files are interpreted.
When a command to be executed is found to be a shell procedure, rsh invokes sh to execute it. Thus, it is possible to provide to the end-user shell procedures that have access to the full power of the standard ...
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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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