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The Thompson goto command was bizarre because it was not a shell built-in. It was actually an external command. Decisions like this were made to get the thing to run in a 16 bit machine.

First...

Things are changing all the time. If you run prstat then you run ps you get two differtent snapshots of memory. Even if you run them more or less simultaneously they will not examine the processes...

The "let" command originated in ksh. Dave Korn considered it to be a mistake and very quickly developed the double parentheses notation to replace it. By the mid 1980's the advice was to not use...

Try this: in modprobe.d create a new file called 8021q. In it, put the lines:
install 8021q /bin/true
install garp /bin/true


This tells the kernel to use non-standard versions of 8021q and...

Suppose it did that. There are still errors you can make that render sudo usuable like "chmod 0 /usr/bin/sudo". As a sysadmin you need to be ready for that and be able to operate when sudo fails....

Well, see this thread (https://www.unix.com/tips-and-tutorials/36711-whole-story-usr-bin-ksh.html) especially "Part 2 The Format of the #! Line"

See this thread (https://www.unix.com/unix-for-advanced-and-expert-users/243903-dot-sourcing-differences-ksh-aix-vs-linux-vs-solaris.html)

I would not cat the new certificate onto the end of the old certificate. I would rename the old certificate to a save file. Then I would just move the new certificate in place.

I am not really familiar with modern fortran. But is not g++ a compiler for the C++ language? Maybe you should try a fortran compiler? To test my guess I wrote a little "hello world" program in...

IMHO, the best book ever written on the subject is: C Programmer's Guide to Serial Communications (http://www.amazon.com/C-Programmers-Guide-Serial-Communications/dp/0672302861/)

ksh does indeed have a special way to deal with child scripts that have no #! leading line. This introduces a number of special features that expands the traditional unix environment. These...

Read your putty documentation again. Chapter 9 describes using pagent to supply authentication. Once pagent is running you can do stuff like this:
C:\Windows\System32>
C:\Windows\System32>...

On my mgetty man page I see:

-m 'expect send ...'
Set the "chat sequence" that is used to initialize the modem. For an empty expect part, use empty double
...

Core dump occur as default action of a few signals. The list is available with "man -s7 signal" on RedHat. You could install a signal handler to catch all those signals. It could then display...

It's probably too late to help SkySmart, but I thought that I would post a followup anyway. In another thread I saw Corona688 perform date arithmetic via the -d parameter to date. This led me to...

Actually, nmap listens to ICMP during UDP scans primarily for ICMP unreachable messages. In theory, if you reach the system with a UDP packet, but the port the packet is addressed to is not...

I got hit with my ksh scripts just going from RedHat 5 to RedHat 6. Yes, they changed the behavior of the builtin echo command. But they added a "-e" flag to get the old behavior. This means...

I see a couple of default for statments in there. Like this:rc_status ()
{
rc_check
_rc_status_ret=$_rc_status
local i
for i ; do
case "$i" in

That "for i" is going to...

First, take a long hard long at the currdisk structure. If there is any chance that (double)currdisk->currangle and (double)currdisk->rotatetime overlap that is your problem. Having these overlap...

There is no way for you to delete you own posts. Your posts are mainly questions. And most of them got an expert answer. The resulting thread is now part of our permament knowledge base. Other...

Well, it gets mad right after it cannot open those device files. I would check the permissions on them. They're supposed to be 666.

#
# ls -l /dev/udp /dev/tcp /dev/ticlts /dev/ticotsord...

This has happened to me on several occasions. Not a timeout per se, but the connection drops or something like that. There are ways to make the the rm process nearly immortal. But I simply...

Actually, most ftp clients support a facility called macros. You get into interactive mode and define a macro with the macdef command. It is a very limited and rarely used facility. I just checked...

Depending on your threat model there may be little problem in writing down passwords. My company is under near continuous assault from countries like China and North Korea. We are required to use...

If there was any such thing as ideal limits, the system would be locked into using the ideal limits and there would be no adjustment you could make. That said, a couple of issues do come to mind......