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How to detect the OS from a Bash script?
...ve a sh script of about 100 lines that works across a very wide variety of Unix platforms: any system I have used since 1988.
The key elements are
uname -p is processor type but is usually unknown on modern Unix platforms.
uname -m will give the "machine hardware name" on some Unix systems.
/bin/...
OS detecting makefile
...e
The make command is the same on both platforms. The given output is on Unix-like OSes:
> make -C lib
make: Entering directory '/tmp/lib'
gcc -c hello.c -fPIC -o hello.o
# -c hello.c => hello.c is first file after ':' => Compile hello.c
# -fPIC => Position-Independent Code ...
Make sure only a single instance of a program is running
...
This code is Linux specific. It uses 'abstract' UNIX domain sockets, but it is simple and won't leave stale lock files around. I prefer it to the solution above because it doesn't require a specially reserved TCP port.
try:
import socket
s = socket.socket(socket....
Where is my .vimrc file?
...ur vimrc, start up Vim and do one of the following:
:e $HOME/.vimrc " on Unix, Mac or OS/2
:e $HOME/_vimrc " on Windows
:e s:.vimrc " on Amiga
Insert the settings you want, and save the file.
Note that exisitence of this file will disable the compatible option. See below for details.
L...
Should URL be case sensitive?
...is up to the server how to handle the request URL. Most of web servers are unix/linux and that means most of web servers are case sensitive.
– oᴉɹǝɥɔ
Apr 30 '13 at 16:37
...
What does the ??!??! operator do in C?
...rdcopy communication terminals as computer user interfaces. In the initial Unix and C era that was the ASR-33 Teletype.
This device was slow (10 cps) and noisy and ugly and its view of the ASCII character set ended at 0x5f, so it had (look closely at the pic) none of the keys:
{ | } ~
The trig...
How can I run a PHP script in the background after a form is submitted?
...ce the & at the end of the command (as pointed out by @netcoder). This UNIX command runs a process in the background.
The extra variables surrounded in single quotes after the path to the script are set as $_SERVER['argv'] variables that I can call within my script.
The email script then outp...
difference between #if defined(WIN32) and #ifdef(WIN32)
...onals.
For example in your case:
#if defined(WIN32) && !defined(UNIX)
/* Do windows stuff */
#elif defined(UNIX) && !defined(WIN32)
/* Do linux stuff */
#else
/* Error, both can't be defined or undefined same time */
#endif
...
CSV file written with Python has blank lines between each row
...at RFE is Informational. While \r\n may be "standard" on Windows, I'm sure Unix applications typically don't see it that way.
– Dan Breslau
Jul 28 '10 at 2:51
2
...
Converting Long to Date in Java returns 1970
...any epochs dates have been used in various systems. Commonly used is POSIX/Unix time, where the epoch is the first moment of 1970 in UTC. But you should not assume this epoch.
What precision?Are we talking seconds, milliseconds, microseconds, or nanoseconds since the epoch?
What time zone?Usually a ...