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Why is the apt-get function not working in the terminal on Mac OS X v10.9 (Mavericks)?
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it's worth noting that Mac OS X is a unix-based OS (Unix -> BSD -> NeXTSTEP -> Mac OS X) :)
– refaelio
Apr 28 '15 at 9:26
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Are there any standard exit status codes in Linux?
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Note that in some flavors of unix, some commands use an exit status of 2 to indicate other things. For instance, many implementations of grep use an exit status of 2 to indicate an error, and use an exit status of 1 to mean that no selected lines were fo...
Unix - create path of folders and file
I know you can do mkdir to create a directory and touch to create a file, but is there no way to do both operations in one go?
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开源MQTT网关：EMQX vs Mosquitto - 创客硬件开发 - 清泛IT社区，为创新赋能！
...g/OTP 编写，这是一种用于构建大规模可扩展软实时系统的编程语言。与 Mosquitto 不同，EMQX 在设计之初即采用了分布式集群架构，可以轻松实现弹性水平扩展，从而稳定承载大规模的 MQTT 客户端接入。最新版本 EMQX 5.0 可在 23 个节...
Why does the C preprocessor interpret the word “linux” as the constant “1”?
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In the Old Days (pre-ANSI), predefining symbols such as unix and vax was a way to allow code to detect at compile time what system it was being compiled for. There was no official language standard back then (beyond the reference material at the back of the first edition of K&...
Create timestamp variable in bash script
...nk a lot of people arrive at this question looking for a way to generate a unix timestamp (as I have) and find the answer by dchakarov to be more useful even though this answer better addresses the asker's question.
– vastlysuperiorman
Jun 16 '17 at 17:48
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What is AF_INET, and why do I need it?
... The Linux kernel, for example, supports 29 other address families such as UNIX (AF_UNIX) sockets and IPX (AF_IPX), and also communications with IRDA and Bluetooth (AF_IRDA and AF_BLUETOOTH, but it is doubtful you'll use these at such a low level).
For the most part, sticking with AF_INET for socke...
Quick unix command to display specific lines in the middle of a file?
Trying to debug an issue with a server and my only log file is a 20GB log file (with no timestamps even! Why do people use System.out.println() as logging? In production?!)
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How to detect my browser version and operating system using JavaScript?
...all versions of Macintosh OS
// "Linux" for all versions of Linux
// "UNIX" for all other UNIX flavors
// "Unknown OS" indicates failure to detect the OS
var OSName="Unknown OS";
if (navigator.appVersion.indexOf("Win")!=-1) OSName="Windows";
if (navigator.appVersion.indexOf("Mac")!=-1) ...
Remove blank lines with grep
...e line endings), whereas the above only removes files with blank lines and unix style line endings:
grep -v -e '^[[:space:]]*$' foo.txt
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