Decimal value..

What is the decimal value of this 64-bit two’s complement number? 11111111 11111111 11111111 11111111 11111111 11111111 11111111 111110002Just want to see the methodology thanks!


What is the relationship between man pages and info pages?


question about C++

I have the following class declaration (6 points):class A{public:A();virtual void fun();~A();}; a. Is it a good practice?b. Why?

Write the SQL queries

HAPPY INSURANCE Database... more


Find file name from full file path?

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grep regex to ignore comment at end of line?

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How can I use grep to show just filenames on Linux?

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What killed my process and why?

My application runs as a background process on Linux. It is currently started at the command line in a Terminal window. Recently a user was executing the application for a while and it died... more

Chmod 777 to a folder and all contents?

I have a web directory `/www` and a folder in that directory called `store`. Within `store` are several files and folders. I want to give the folder `store` and all files and folders within the... more

How do I add Python to the Windows PATH?

I want to be able to run Python commands from the Windows CMD. However, if I don't specify Python's full path for each command, I get an error saying "*Python is not recognized as an internal or... more

How to recursively find and list the latest modified files in a directory with subdirectories and times?

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How do I download a file over HTTP using Python?

I have a small utility that I use to download a MP3 from a website on a schedule and then builds/updates a podcast XML file which I've obviously added to iTunes.The text processing that... more


When is assembly faster than C?

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Python join: why is it string.join(list) instead of list.join(string)?

This has always confused me. It seems like this would be nicer: my_list = ["Hello", "world"] print my_list.join("-") # Produce: "Hello-world"Than this: my_list = ["Hello", "world"] ... more


Recursively counting files in a Linux directory?

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How to have the cp command create any necessary folders for copying a file to a destination?

When copying a file using `cp` to a folder that may or may not exist, how do I get `cp` to create the folder if necessary? Here is what I have tried: <!-- language:none --> [root@file... more


Bash ignoring error for a particular command?

I am using following options set -o pipefail set -e In bash script to stop execution on error. I have 100 of script executing and I don't want to check return code of the script. But for a... more


Shell command to tar directory excluding certain files/folders?

Is there a simple shell command/script that supports excluding certain files/folders from being archived? I have a directory that need to be archived with a sub directory that has a number of very... more


What's the purpose of using braces (i.e. {}) for a single-line if or loop?

I'm reading some lecture notes of my C++ lecturer and he wrote the following: > 1. Use Indentation // OK > 2. Never rely on operator precedence - Always use parentheses // OK > 3.... more


How to exclude a directory in find . command?

I'm trying to run a `find` command for all JavaScript files, but how do I exclude a specific directory? Here is the `find` code we're using. for file in $(find . -name '*.js') do java -jar... more

Display number with leading zeros?

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How to represent multiple conditions in a shell if statement?

I want to represent multiple conditions like this: if [ ( $g -eq 1 -a "$c" = "123" ) -o ( $g -eq 2 -a "$c" = "456" ) ] then echo abc; else echo efg; fi but when I execute the script,... more

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