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Run a string as a command within a Bash script
...rameters so I ended up with something like:
my_exe ()
{
mysql -sN -e "select $1 from heat.stack where heat.stack.name=\"$2\";"
}
This is something I use to monitor openstack heat stack creation. In this case I expect two conditions, an action 'CREATE' and a status 'COMPLETE' on a stack named ...
What is the difference between mutex and critical section?
...
The 'fast' Windows equal of critical selection in Linux would be a futex, which stands for fast user space mutex. The difference between a futex and a mutex is that with a futex, the kernel only becomes involved when arbitration is required, so you save the over...
Mercurial: how to amend the last commit?
...I (I'm using v2.5):
Swich to the 'Commit' view or, in the workbench view, select the 'working directory' entry.
The 'Commit' button has an option named 'Amend current revision' (click the button's drop-down arrow to find it).
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Caveat emptor:
This ex...
What's the proper way to install pip, virtualenv, and distribute for Python?
...hat bootstrap environment to create more!
Here is an example in bash:
# Select current version of virtualenv:
VERSION=12.0.7
# Name your first "bootstrap" environment:
INITIAL_ENV=bootstrap
# Set to whatever python interpreter you want for your first environment:
PYTHON=$(which python)
URL_BASE=h...
How to disassemble one single function using objdump?
...g=1;next}/^[[:xdigit:]]+ <.*>:$/{flag=0}flag'
adapted from: How to select lines between two marker patterns which may occur multiple times with awk/sed
Mailing list replies
There is a 2010 thread on the mailing list which says it is not possible: https://sourceware.org/ml/binutils/2010-04/...
configure Git to accept a particular self-signed server certificate for a particular https remote
...es -> View Certificates -> Servers, found there the selfsigned host, selected it and using Export button I got exactly the same file, as created using openssl.
Note: I was a bit surprised, there is no name of the authority visibly mentioned. This is fine.
Having the trusted certificate in de...
Dynamic LINQ OrderBy on IEnumerable / IQueryable
...ia
orderby GetPropertyValue(enumerable,"SomeProperty")
select enumerable
private static object GetPropertyValue(object obj, string property)
{
System.Reflection.PropertyInfo propertyInfo=obj.GetType().GetProperty(property);
return propertyInfo.GetValue(obj, null);
}
No...
Get Android .apk file VersionName or VersionCode WITHOUT installing apk
...e of Android Studio then in Android Studio use Build → Analyze APK then select AndroidManifest.xml file.
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Do you debug C++ code in Vim? How? [closed]
...ey are able to jump around definitions in a C++ class aware manner without selecting and installing several different plugins themselves, and that includes while step debugging stuff. As of 2020 the least worst one for me was Eclipse: https://www.slant.co/topics/1411/~best-ides-for-c-on-linux
...
Remove large .pack file created by git
...ter the merge that you want to keep, it would be best to rebase master and selectively include commits that you want:
git checkout master
git log # Find the commit hash just before the merge
git rebase -i <commit hash>
In your editor, remove lines that correspond to the commits that added t...