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Print all but the first three columns

...$(i-2)=$i; NF=NF-2; print $0}' | tr ' ' '-' 3-4-5-6-7 This is the fixed and parametrized version of larsr solution: $ echo '1 2 3 4 5 6 7' | awk '{for(i=n;i<=NF;i++)$(i-(n-1))=$i;NF=NF-(n-1);print $0}' n=4 | tr ' ' '-' 4-5-6-7 All other answers before Sep-2013 are nice but add extra spac...
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Is it safe to use -1 to set all bits to true?

...times have surprising behavior because you will have to have the right operand type. Only then you will get the most high value of an unsigned type. For an example of a possible surprise, consider this one: unsigned long a = ~0u; It won't necessarily store a pattern with all bits 1 into a. But ...
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Split string into an array in Bash

In a Bash script I would like to split a line into pieces and store them in an array. 22 Answers ...
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do..end vs curly braces for blocks in Ruby

...worker who is actively trying to convince me that I should not use do..end and instead use curly braces for defining multiline blocks in Ruby. ...
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How to open, read, and write from serial port in C?

I am a little bit confused about reading and writing to a serial port. I have a USB device in Linux that uses the FTDI USB serial device converter driver. When I plug it in, it creates: /dev/ttyUSB1. ...
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Regular expression to get a string between two strings in Javascript

...ot consume any input. It is a zero-width assertion (as are boundary checks and lookbehinds). You want a regular match here, to consume the cow portion. To capture the portion in between, you use a capturing group (just put the portion of pattern you want to capture inside parenthesis): cow(.*)mi...
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What is RSS and VSZ in Linux memory management

What are RSS and VSZ in Linux memory management? In a multithreaded environment how can both of these can be managed and tracked? ...
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JavaScript function similar to Python range()

... See this jsfiddle for a proof. Comparison between range() in JavaScript and Python It works in the following way: range(4) returns [0, 1, 2, 3], range(3,6) returns [3, 4, 5], range(0,10,2) returns [0, 2, 4, 6, 8], range(10,0,-1) returns [10, 9, 8, 7, 6, 5, 4, 3, 2, 1], range(8,2,-2) returns [8...
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Booleans, conditional operators and autoboxing

...time: E1: `true ? returnsNull() : false` - boolean (auto-unboxing 2nd operand to boolean) E2: `true ? null : false` - Boolean (autoboxing of 3rd operand to Boolean) See Java Language Specification, section 15.25 Conditional Operator ? : For E1, the types of the 2nd and 3rd operands are Boolean...
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How do I put an already-running process under nohup?

I have a process that is already running for a long time and don't want to end it. 11 Answers ...