17,499 reputation
22260
bio website stratigery.com
location Denver, CO
age 53
visits member for 4 years, 2 months
seen 1 hour ago

My first computer was a Radio Shack Color Computer 3 - 6809-based, running OS-9 Level II. It could run 32 processes at once, due to bank-switching a whole 1 Meg of memory.

After that, I got an AT&T 3b2, also known as a Convergent Safari. This was a Motorola 68010-based desktop.

Then, I graduated to a NeXT black&white "slab". I bought a used SPARCStation IPC in 1995, and put NetBSD 0.9 on it. I ran NetBSD on the IPC and a SPARCStation 10 until 2002.

I've been using Linux since 1997, starting with a DEC Alpha-based UDB, and downgrading to a x86 PC in 2002.

I run Arch linux, on my server and my laptop.


Nov
15
comment ELF shared libraries - motivation for the PLT
You can use the mprotect(2) system call to make .text segment pages writeable and executable.
Nov
8
comment How do I count all the files that begin with letters from a to g?
Just a habit for me. Those two shell globs should match the same file names, but I think seeing all the characters in a range is clearer, at least for small numbers of characters.
Nov
8
answered How do I count all the files that begin with letters from a to g?
Nov
7
comment What means the “integer argument” in system call descriptions?
Just an FYI, true system calls would have a "2": "read(2)" for example. Library calls have a "3", so "exec(3)" means a library call, one that ends up calling "execve(2)", the actual system call.
Oct
31
comment Does free() unmap the memory of a process?
@michelle: suppose a page size of 4192 bytes. A program calls malloc(4186) and then malloc(8). The program has allocated all of a page. The program calls free() on the 4186-byte allocation. free() cannot unmap the page because the 8-byte-allocation has not been free()'ed.
Oct
31
revised Does free() unmap the memory of a process?
Add links about Vam memory allocator.
Oct
31
answered Does free() unmap the memory of a process?
Oct
24
answered why slight delay after failed login in tty
Oct
23
comment what is the difference between “chmod 775” and “chmod 2755”?
So, no effect on a non-executable file? What effect does it have on a directory?
Oct
19
awarded  Nice Answer
Oct
19
comment Pacman option to assume “yes” to every question?
I've never run pacman with the "--noconfirm" in about 3 years of using Arch, because of that warning. How many people run pacman from a script? What are the big risks? I have had to intervene 3 or 4 times to fix things that pacman has refused to upgrade.
Oct
14
comment No network in slackware
My Slackware machine is running 12.0, and it works exactly as the official network config site says.
Oct
13
answered Fastest way to get list of all file sizes
Oct
11
comment What is Unix for the OpenVMS DUMP command?
+1 for xxd. It's not available everywhere, but that's the one you want to use.
Oct
6
answered Linux network troubleshooting and debugging
Oct
6
answered Linux network troubleshooting and debugging
Oct
4
answered tmux status-bar corrupted after catting a binary file, how to reset?
Oct
1
answered Reserved characters in file names
Sep
28
comment Modification and Access time of a file?
Yes. But it was the simplest example I could find.
Sep
28
answered Modification and Access time of a file?