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How do I get the full path to a Perl script that is executing?
...c;
File::Spec->rel2abs( __FILE__ );
http://perldoc.perl.org/File/Spec/Unix.html
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How can I suppress all output from a command using Bash?
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This does not run the process on unix systems , I had to do 2>/dev/null
– alper
Jun 7 at 17:20
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What is “Orthogonality”?
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From Eric S. Raymond's "Art of UNIX programming"
Orthogonality is one of the most important properties that can help make even complex designs compact. In a purely orthogonal design, operations do not have side effects; each action (whether it's an API...
How do I change the working directory in Python?
...g directory of the current process. This is lost when you exit back to the Unix shell. If desperate you can change the parent shell directory on Unix with this horrible hack:
def quote_against_shell_expansion(s):
import pipes
return pipes.quote(s)
def put_text_back_into_terminal_input_buff...
How do I alias commands in git?
...the git config alias command:
$ git config --global alias.st status
On unix, use single quotes if the alias has a space:
$ git config --global alias.ci 'commit -v'
On windows, use double quotes if the alias has a space or a command line argument:
c:\dev> git config --global alias.ci "comm...
How to determine CPU and memory consumption from inside a process?
... Platforms
I would assume, that some of the Linux code also works for the Unixes, except for the parts that read the /proc pseudo-filesystem. Perhaps on Unix these parts can be replaced by getrusage() and similar functions?
If someone with Unix know-how could edit this answer and fill in the detail...
App Inventor 2 考勤系统教程 - 定位打卡与二维码签到 · App Inventor 2 中文网
...一：GPS定位打卡
原理
界面设计
积木块代码
Haversine距离计算
方案二：二维码签到
原理
生成签到二维码
扫码签到
防作弊机制
1. 位置模拟检测
2. 动态二维码（每...
how to find host name from IP with out login to the host
i need to find the host name of a UNIX host whose IP is known with out login to that UNIX host
11 Answers
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Postgresql: password authentication failed for user “postgres”
...l/9.3/main/pg_hba.conf
Change all authentication methods to trust. Change Unix Password for "postgres" user. Restart Server. Login with psql -h localhost -U postgres and use the just set Unix password. If it works you can re-set the pg_hba.conf file to the default values.
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How do I automatically scroll to the bottom of a multiline text box?
... {
if(System.Environment.OSVersion.Platform != System.PlatformID.Unix)
SendMessage(tb.Handle, WM_VSCROLL, new System.IntPtr(SB_BOTTOM), System.IntPtr.Zero);
}
}
VB.NET:
Public Class Utils
<System.Runtime.InteropServices.DllImport("user32.dll", CharSet := System...