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A terrific quote:
Post 303042466 by wisecracker on Thursday 26th of December 2019 04:29:34 AM
12-26-2019
Apologies for any typos.
No it doesn't make you dumb, it means you have not found your niche to create an "_app'_" to take on and maybe even excel at compared to your peers.
It also means that you probably have much more activity in other fields in your private life which would make you think a lot.
I found mine in the late 90s:
My programming niche...
This started me on the road to my multi language learning.
I hadn't ever seen a shell script until joining this site in January 2013 so I jumped in at the deep end bragging with an AudioScope.sh, a SINGLE "bash" script which has, and is, still being gently followed.
I deliberately placed limits on it and the biggest one was the I/O. ONLY the mic and ear are allowed for input and output. USB, Parallel, Serial and others are NOT allowed.
These had to deliver DC as well as AC components on input and output. I got a tremendous amount of help from the big guns on here and from these beginnings I have done some really strange things and most are POSIX compliant:
A DFT in a PURE ksh93 shell script.
A GOTO function.
A Fixed Point SQRT using integer maths.
And much more, all on this site. Most have been bettered by my peers who still know much more than I do about UNIX scripting.
Why?
As a pure learning task to see if it is possible and nothing more.
I am working on a POSIX compliant DFT using integer arithmetic ATM and it is seriously tough. I don't expect it to work but I do have a natural ability to think laterally/orthogonally hence my bizarre uploads to this site.
So GO FOR IT, even if it is something like a CrossStitch Program or calculating the minimum area for a _mains_ cable carrying large current loads.
You would be surprised what you learn by taking on such a task.
Quote:
I pass on this one. My brain is not made for programming. Though I think I can handle pretty much everything else pretty well, and I am now nearing 34 years working in various fields in IT, I just pass on scripting on everything longer than a very long one-liner. Not for lack of trying. I do understand scripts in various scripting languages well enough to debug them, to adjust them to my needs and to expand them if necessary. But I could not write one on my own if my life depends on it. Does this make me dumb? 
It also means that you probably have much more activity in other fields in your private life which would make you think a lot.
I found mine in the late 90s:
My programming niche...
This started me on the road to my multi language learning.
I hadn't ever seen a shell script until joining this site in January 2013 so I jumped in at the deep end bragging with an AudioScope.sh, a SINGLE "bash" script which has, and is, still being gently followed.
I deliberately placed limits on it and the biggest one was the I/O. ONLY the mic and ear are allowed for input and output. USB, Parallel, Serial and others are NOT allowed.
These had to deliver DC as well as AC components on input and output. I got a tremendous amount of help from the big guns on here and from these beginnings I have done some really strange things and most are POSIX compliant:
A DFT in a PURE ksh93 shell script.
A GOTO function.
A Fixed Point SQRT using integer maths.
And much more, all on this site. Most have been bettered by my peers who still know much more than I do about UNIX scripting.
Why?
As a pure learning task to see if it is possible and nothing more.
I am working on a POSIX compliant DFT using integer arithmetic ATM and it is seriously tough. I don't expect it to work but I do have a natural ability to think laterally/orthogonally hence my bizarre uploads to this site.
So GO FOR IT, even if it is something like a CrossStitch Program or calculating the minimum area for a _mains_ cable carrying large current loads.
You would be surprised what you learn by taking on such a task.
This User Gave Thanks to wisecracker For This Post:
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LEARN ABOUT CENTOS
lksh
LKSH(1) BSD General Commands Manual LKSH(1) NAME
lksh -- Legacy Korn shell built on mksh SYNOPSIS
lksh [-+abCefhiklmnprUuvXx] [-+o opt] [-c string | -s | file [args ...]] DESCRIPTION
lksh is a command interpreter intended exclusively for running legacy shell scripts. It is built on mksh; refer to its manual page for details on the scripting language. It is recommended to port scripts to mksh instead of relying on legacy or idiotic POSIX-mandated behav- iour, since the MirBSD Korn Shell scripting language is much more consistent. LEGACY MODE
lksh has the following differences from mksh: o lksh is not suitable for use as /bin/sh. o There is no explicit support for interactive use, nor any command line editing or history code. Hence, lksh is not suitable as a user's login shell, either; use mksh instead. o The KSH_VERSION string identifies lksh as ``LEGACY KSH'' instead of ``MIRBSD KSH''. o lksh only offers the traditional ten file descriptors to scripts. o lksh uses POSIX arithmetics, which has quite a few implications: The data type for arithmetics is the host ISO C long data type. Signed integer wraparound is Undefined Behaviour. The sign of the result of a modulo operation with at least one negative operand is unspeci- fied. Shift operations on negative numbers are unspecified. Division of the largest negative number by -1 is Undefined Behaviour. The compiler is permitted to delete all data and crash the system if Undefined Behaviour occurs. o The rotation arithmetic operators are not available. o The shift arithmetic operators take all bits of the second operand into account; if they exceed permitted precision, the result is unspecified. o The GNU bash extension &> to redirect stdout and stderr in one go is not parsed. o The mksh command line option -T is not available. o Unless set -o posix is active, lksh always uses traditional mode for constructs like: $ set -- $(getopt ab:c "$@") $ echo $? POSIX mandates this to show 0, but traditional mode passes through the errorlevel from the getopt(1) command. o lksh, unlike AT&T UNIX ksh, does not keep file descriptors > 2 private. SEE ALSO
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