ThinhPhan

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

ThinhPhan

What is the difference between “chmod +x” and “chmod 755”?

Motivate from this question and answer https://askubuntu.com/a/932719/927010

Short version:

To be able to compare them, we should look at them from the same perspective, so:

chmod +x is equal to chmod ugo+x (Based on umask value) chmod 755 is equal to chmod u=rwx,go=rx

ThinhPhan

Hello World

This is how npx work. Enjoy yourself.

Copy the URL above on your browser's address npx [YOUR-AWESOME-GIST-URL]

ThinhPhan

Keybase proof

I hereby claim:

• I am ThinhPhan on github.
• I am vincentphan (https://keybase.io/vincentphan) on keybase.
• I have a public key whose fingerprint is DD84 89C3 55B3 FDD0 201E 4E48 E6B6 FB5E 0726 1456

To claim this, I am signing this object:

ThinhPhan

dwc_otg.lpm_enable=0 console=null root=LABEL=resin-rootA rootfstype=ext4 rootwait vt.global_cursor_default=0    

ThinhPhan

WPE Issues

OpenGL

Read more OpenGL Error

• glGetError 0x502 : means invalid operation
• glGetError 0x505 : means out-of-memory reported by the opengl gpu driver --> Solution: Share more memory to GPU

ThinhPhan

.PHONY: install uninstall test set-default

test:
	sudo apt install plymouth-x11
	sudo plymouthd ; sudo plymouth --show-splash ; for ((I=0; I<10; I++)); do sleep 1 ; sudo plymouth --update=test$I ; done ; sudo plymouth --quit

uninstall:
	rm -rv /usr/share/plymouth/themes/first || true

install: uninstall

ThinhPhan

Opt 1: From Nodesource

curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -
sudo apt-get install -y nodejs

Opt 2: Download & Install

wget https://nodejs.org/dist/v4.3.2/node-v4.3.2-linux-armv6l.tar.gz 

ThinhPhan

Making an IP camera with the Raspberry Pi

Including on-board motion detection

Requirements

• Raspberry Pi (512MB rev2 recommended)
• Raspberry Pi Camera board
• SD Card (min 2BG, 8GB recommended for good measure. Class 10)

Optionally, a wifi adapter verified to work with raspberry pi ( I used Edimax Wireless Nano USB Adapter - http://www.amazon.com/gp/product/B005CLMJLU/ )

ThinhPhan

#define ACCEPTABLE_CHARACTERS @"0123456789"
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
    
    if (!string.length)
        return YES;
    
    if (textField == self.quantityTextField) {
        NSCharacterSet *numbersOnly = [[NSCharacterSet characterSetWithCharactersInString:ACCEPTABLE_CHARACTERS] invertedSet];
        NSString *filtered = [[string componentsSeparatedByCharactersInSet:numbersOnly] componentsJoinedByString:@""];
        BOOL stringIsValid = [string isEqualToString:filtered];