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Reading and writing environment variables in Python? [duplicate]
My python script which calls many python functions and shell scripts. I want to set a environment variable in Python (main calling function) and all the daughter processes including the shell scripts to see the environmental variable set.
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AngularJS app.run() documentation?
How and where is app.run() used? After module definition, after app.config() or after app.controller() ?
2 Answers
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How can I select random files from a directory in bash?
I have a directory with about 2000 files. How can I select a random sample of N files through using either a bash script or a list of piped commands?
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How do you delete all text above a certain line
...hing from your current line to the top of the file.
d is the deletion command, and gg is a movement command that says go to the top of the file, so when used together, it means delete from my current position to the top of the file.
Also
dG
will delete all lines at or below the current one
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What are enums and why are they useful?
Today I was browsing through some questions on this site and I found a mention of an enum being used in singleton pattern about purported thread safety benefits to such solution.
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Is Fortran easier to optimize than C for heavy calculations?
...ode that has aliasing is not valid Fortran, but it is up to the programmer and not the compiler to detect these errors. Thus Fortran compilers ignore possible aliasing of memory pointers and allow them to generate more efficient code. Take a look at this little example in C:
void transform (float *...
How to modify existing, unpushed commit messages?
...t commit. Additionally, you can set the commit message directly in the command line with:
git commit --amend -m "New commit message"
…however, this can make multi-line commit messages or small corrections more cumbersome to enter.
Make sure you don't have any working copy changes staged before do...
How do I debug Node.js applications?
...ly for me, node-inspector doesn't work with the latest versions of Node.js and it hasn't supported logging to the browser console since v0.1. node-codein was just buggy. So, I wrote my own module to help with debugging by allowing you to dump objects and such out to your web browser console. I thoug...
How can I reverse the order of lines in a file?
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BSD tail:
tail -r myfile.txt
Reference: FreeBSD, NetBSD, OpenBSD and OS X manual pages.
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Capitalize the first letter of both words in a two word string
Let's say that I have a two word string and I want to capitalize
both of them.
12 Answers
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