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Differences between fork and exec
...program is a collection of instructions and data that is kept in a regular file on disk. (from 1.1.2 Programs, Processes, and Threads)
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In order to run a program, the kernel is first asked to create a new process, which is an environment in which a program executes. (also from 1.1.2 Programs,...
Can a shell script set environment variables of the calling shell? [duplicate]
...tes any changes you've made to its environment are lost. Sourcing a script file is the most commonly used method for configuring a shell environment, you may just want to bite the bullet and maintain one for each of the two flavors of shell.
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How to enable C++11/C++0x support in Eclipse CDT?
...ion depends on what kind of project you created:
For project created as: File -> New -> Project -> C/C++ -> C++ Project
Right click on created project and open
Properties -> C/C++ Build -> Settings -> Tool Settings -> GCC C++ Compiler -> Dialect
Put -std=c++11 into t...
How to easily map c++ enums to strings
I have a bunch of enum types in some library header files that I'm using, and I want to have a way of converting enum values to user strings - and vice-versa.
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How to set breakpoints on future shared libraries with a command flag
... is used in cmds.gdb like e.g.
set breakpoint pending on
break <source file name>:<line number>
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Create objective-c class instance by name?
...e than legit - it is the base for any serialization of object hierarchy to file/memory-block/plist/whatever. Many times you DO NOT KNOW in advance which classes you'll need to instantiate. My use-case is the tedious need to "register" gazillion "NSValueTransformer"s and instead of duplicating [NSVa...
Determine if Python is running inside virtualenv
...+. If it's failing (I got "bad marshal data") you'll need to wipe the .pyc files with find /path/to/venv -type f -name "*.pyc" -exec rm {} \+ (don't worry, they'll rebuild automatically).
– jeremysprofile
Oct 29 '18 at 20:47
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What is the difference between “mvn deploy” to a local repo and “mvn install”?
...going to run "mvn deploy". Running this is going to attempt to deploy the files to a remote repository or server. Usually I'm going to be deploying to a repository manager such as Nexus
It is true that running "deploy" is going to require some extra configuration, you are going to have to suppl...
How to get Linux console window width in Python
...st is reasonably universal on linux. It opens the 'stty size' command as a file, 'reads' from it, and uses a simple string split to separate the coordinates.
Unlike the os.environ["COLUMNS"] value (which I can't access in spite of using bash as my standard shell) the data will also be up-to-date wh...
bundle install returns “Could not locate Gemfile”
...pp directory by using the whereis <app_name> command, ussualy the Gemfile is under /usr/shared/*
– 4gus71n
Jun 6 '15 at 14:55
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