[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Bash PS4 and indirection level
From: |
Chet Ramey |
Subject: |
Re: Bash PS4 and indirection level |
Date: |
Tue, 17 Nov 2020 09:12:52 -0500 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.4.3 |
On 11/17/20 8:12 AM, Kevin Shell wrote:
Hello bash list.
What constitutes a level of indirection?
The bash manual says the first character of $PS4
indicates one level of indirection but says nothing
about what constitutes an indirection level.
I found the eval command constitutes one indirection level.
Yes, it's essentially a measure of command nesting.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet@case.edu http://tiswww.cwru.edu/~chet/