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Correct Bash and shell script variable capitalization
... variables that are scoped to a single script or a block.
Examples: input_file first_value max_amount num_errors
Use mixed case when local variable has some relationship with an environment variable, like: old_IFS old_HOME
Use a leading underscore for "private" variables and functions. This is es...
How do you create a random string that's suitable for a session ID in PostgreSQL?
...er the probability of a Version 4 UUID collision is negligible, consider a file containing 2.3 quintillion Version 4 UUIDs, with a 50% chance of containing one UUID collision. It would be 36 exabytes in size, assuming no other data or overhead, thousands of times larger than the largest databases cu...
How to have favicon / icon set when bookmarklet dragged to toolbar?
...r, click Organize dropdown, and select Export, save your bookmarks as html file.
Open that html file in text editor.
Find the bookmark you just created, lets say its Gmail bookmark, you should have an html code for it, that looks like this:
<DT><A HREF="http://mail.google.com/mail/u/0/#i...
pip broke. how to fix DistributionNotFound error?
...ost@host:~$ virtualenv --version
Traceback (most recent call last):
File "/home/users/pdobrogost/.local/bin/virtualenv", line 5, in <module>
from pkg_resources import load_entry_point
File "build/bdist.linux-x86_64/egg/pkg_resources.py", line 2701, in <module>
return se...
How can I transform string to UTF-8 in C#?
...
Use the below code snippet to get bytes from csv file
protected byte[] GetCSVFileContent(string fileName)
{
StringBuilder sb = new StringBuilder();
using (StreamReader sr = new StreamReader(fileName, Encoding.Default, true))
{
String...
Shell script to delete directories older than n days
...+10 -exec rm -rf {} \;
Explanation:
find: the unix command for finding files / directories / links etc.
/path/to/base/dir: the directory to start your search in.
-type d: only find directories
-ctime +10: only consider the ones with modification time older than 10 days
-exec ... \;: for each suc...
What's the difference between “Normal Reload”, “Hard Reload”, and ...
...fied" responses. If the browser can avoid re-downloading cached JavaScript files, images, text files, etc. then it will.
Hard reload
Don't use anything in the cache when making the request. (which is equal to SHIFT+F5 No need to open Developer console) Force the browser do re-download every JavaScr...
Commands executed from vim are not recognizing bash command aliases
...
edit your .vimrc file (vim ~/.vimrc) and put that in a line there (without the :)
– skeept
Jan 10 '11 at 17:25
9
...
SLF4J: Class path contains multiple SLF4J bindings
...ough your jar names could be different)
SLF4J: Found binding in
[jar:file:/D:/Java/repository/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in
[jar:file:/D:/Java/repository/org/apache/logging/log4j/log4j-slf4j-...
What does bundle exec rake mean?
...ipt in the context of the current bundle (the one from your directory's Gemfile). rake db:migrate is the script where db is the namespace and migrate is the task name defined.
So bundle exec rake db:migrate executes the rake script with the command db:migrate in the context of the current bundle.
...