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get UTC time in PHP
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@sanmai: a Unix timestamp is by definition always UTC. en.wikipedia.org/wiki/Unix_time
– nikc.org
Jul 20 '15 at 8:20
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Why do people write the #!/usr/bin/env python shebang on the first line of a Python script?
...rdcode something like #!/usr/bin/python; that's ok, but less flexible.
In Unix, an executable file that's meant to be interpreted can indicate what interpreter to use by having a #! at the start of the first line, followed by the interpreter (and any flags it may need).
If you're talking about oth...
Fastest way to tell if two files have the same contents in Unix/Linux?
I have a shell script in which I need to check whether two files contain the same data or not. I do this a for a lot of files, and in my script the diff command seems to be the performance bottleneck.
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iOS开发调试技巧总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的出错、试错、调错、解决错误的过程中才能提高自己的编程水平和调试能力。我会继续更新该篇博客，讲解更多的调试技能，希望我们都能在实践中提高进步。
iOS 调试技巧
Using awk to remove the Byte-order mark
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In addition to converting CRLF line endings to LF, dos2unix also removes BOMs:
dos2unix *.txt
dos2unix also converts UTF-16 files with a BOM (but not UTF-16 files without a BOM) to UTF-8 without a BOM:
$ printf '\ufeffä\n'|iconv -f utf-8 -t utf-16be>bom-utf16be
$ printf '...
PHP script - detect whether running under linux or Windows?
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You can check if the directory separator is / (for unix/linux/mac) or \ on windows. The constant name is DIRECTORY_SEPARATOR.
if (DIRECTORY_SEPARATOR === '/') {
// unix, linux, mac
}
if (DIRECTORY_SEPARATOR === '\\') {
// windows
}
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What is the reason for performing a double fork when creating a daemon?
.... So if neither of these cases apply, then one fork should be sufficient. "Unix Network Programming - Stevens" has a good section on this.
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Bash script prints “Command Not Found” on empty lines
...bash
Enter your path to bash if it is not /bin/bash
Try running:
dos2unix script.sh
That wil convert line endings, etc from Windows to unix format. i.e. it strips \r (CR) from line endings to change them from \r\n (CR+LF) to \n (LF).
More details about the dos2unix command (man page)
An...
How to configure an existing git repo to be shared by a UNIX group
...s up to this point only been writable by me. I want to open it up to some UNIX user group, foo, so that all members of foo can push to it. I'm aware that I can easily set up a new git repo with:
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Colors with unix command “watch”?
Some commands that I use display colors, but when I use them with watch the colors disappears:
6 Answers
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