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Accessing bash command line args $@ vs $*
...tions and bash tutorials I see that I can access command line args in bash scripts in two ways:
5 Answers
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How to get back to most recent version in Git?
... a bit confused about something. I needed to run the previous version of a script through a debugger, so I did git checkout <previous version hash> and did what I needed to do.
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Is it possible to dynamically compile and execute C# code fragments?
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@Crash893: A scripting system for pretty much any sort of designer application could make good use of this. Of course, there are alternatives such as IronPython LUA, but this is certainly one. Note that a plugin system would be better dev...
Remove empty array elements
... answer on this topic is absolutely INCORRECT.
Consider the following PHP script:
<?php
$arr = array('1', '', '2', '3', '0');
// Incorrect:
print_r(array_filter($arr));
// Correct:
print_r(array_filter($arr, 'strlen'));
Why is this? Because a string containing a single '0' character also eva...
'sudo gem install' or 'gem install' and gem locations
...ninstallable via gem uninstall, etc. without needing sudo access. Runnable scripts installed by gem or bundler can be put into your path by adding
$HOME/.gem/ruby/RUBYVERSION/bin
to your $PATH. gem itself tells you about this if it isn't set when you do gem install --user-install.
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Faster s3 bucket duplication
...urrent-requests
To quickly transfer a huge number of small files, run the script from an EC2 instance to decrease latency, and increase max_concurrent_requests to reduce the impact of latency. Eg:
aws configure set default.s3.max_concurrent_requests 200
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Python multiprocessing PicklingError: Can't pickle
...bit less elegant).
I was running:
python -m profile -o output.pstats <script>
And found that removing the profiling removed the error and placing the profiling restored it. Was driving me batty too because I knew the code used to work. I was checking to see if something had updated pool.p...
How can I change the file type association of an existing file in WebStorm?
...stuck without any syntax highlighting. WebStorm doesn't treat it as a javascript file. I can't find anywhere to change how WebStorm treats this file. I've tried renaming it and renaming it back and that doesn't work. With any other name, (with a .js extension) it treats it as a javascript file, ...
How do I remove all .pyc files from a project?
...ct and want to remove the .pyc files they've left behind. I tried the bash script:
19 Answers
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Why 0 is true but false is 1 in the shell?
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Bash is a programming (scripting) language, but it's also a shell and a user-interface. If 0 was error, then the program could only present one kind of error.
However in Bash, any nonzero value is an error, and we may use any number from 1-255 to...