Scripting is sorcery
Tyson Gill Grep Command attributes
Recursively Search a sting in current directory
grep -inr 'search-text' .
Search in specific file pattern
grep -inr --include="*txt" "search-text" .
Grep with only first 150 text of lines
grep -inr 'search-text' | cut -c 1-150
One line command
for f in *; do mv "$f" $RANDOM-"$f"; done
Script
#!/bin/bash for f in *.jpg; do mv "$f" $RANDOM-"$f" done
Comamnds :
Reference :
String Interpolation
Property binding
String interpolation and Property Binding
String Interpolation is a special syntax which is converted to property binding by Angular. It’s a convenient alternative to property binding.
When you need to concatenate strings, you must use interpolation instead of property binding.
@Component({
selector: 'my-app',
template: `<div>
<h1>{{interposlationExample}}</h1>
</div>`
})
export class AppComponent {
interposlationExample: string = 'Interpolation for string only';
}
Property Binding is used when you have to set an element property to a non-string data value.
Example:
In the following example, we disable a button by binding to the Boolean property isDisabled.
import { Component } from '@angular/core';
@Component({
selector: 'my-app',
template: `<div>
<button [disabled]='isDisabled'>Disable me</button>
</div>`
})
export class AppComponent {
isDisabled: boolean = true;
}
If you use interpolation instead of property binding, the button will always be disabled regardless isDisabled class property value is true or false.
import { Component } from '@angular/core';
@Component({
selector: 'my-app',
template: `<div>
<button disabled='{{isDisabled}}'>Disable Me</button>
</div>`
})
export class AppComponent {
isDisabled: boolean = true/false;
}
Reference :
Reference :
