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Rename multiple files by replacing a particular pattern in the filenames using a shell script [dupli
...a pattern. For example following command will prepend string MyVacation2011_ to all the files with jpg extension.
rename 's/^/MyVacation2011_/g' *.jpg
or
rename <pattern> <replacement> <file-list>
sha...
How do I use vimdiff to resolve a git merge conflict?
...at I want on the terminal, e.g. something along:
--- ./src/dev/arm/RealView_BASE_15560.py 2019-12-27 13:46:41.967021591 +0000
+++ ./src/dev/arm/RealView_LOCAL_15560.py 2019-12-27 13:46:41.979021479 +0000
@@ -994,7 +994,7 @@
...
What are the respective advantages/limitations of Amazon RDS vs. EC2 with MySQL? [closed]
....com/2009/09/ec2-consistent-snapshot
EC2 without RAID0 EBS will provide crappy I/O performance, thus it's not even really an option.
RDS will provide very good (though not maximum) performance out of the box. The management console is fantastic and it's easy to upgrade instances. High availability...
What is Bit Masking?
...esult: 00000101b
Masking is implemented using AND, so in C we get:
uint8_t stuff(...) {
uint8_t mask = 0x0f; // 00001111b
uint8_t value = 0x55; // 01010101b
return mask & value;
}
Here is a fairly common use-case: Extracting individual bytes from a larger word. We define the high-...
How do I pass a method as a parameter in Python
...thodToRun()
return result
obj.method2(obj.method1)
Note: I believe a __call__() method does exist, i.e. you could technically do methodToRun.__call__(), but you probably should never do so explicitly. __call__() is meant to be implemented, not to be invoked from your own code.
If you wanted me...
Truncating all tables in a Postgres database
.../pgSQL can do this. Here's the script:
CREATE OR REPLACE FUNCTION truncate_tables(username IN VARCHAR) RETURNS void AS $$
DECLARE
statements CURSOR FOR
SELECT tablename FROM pg_tables
WHERE tableowner = username AND schemaname = 'public';
BEGIN
FOR stmt IN statements LOOP
...
Get Folder Size from Windows Command Line
...th
If you want it prettier:
switch((ls -r|measure -sum Length).Sum) {
{$_ -gt 1GB} {
'{0:0.0} GiB' -f ($_/1GB)
break
}
{$_ -gt 1MB} {
'{0:0.0} MiB' -f ($_/1MB)
break
}
{$_ -gt 1KB} {
'{0:0.0} KiB' -f ($_/1KB)
break
}
default { "$_ bytes" }
}
You can use this d...
Dealing with nginx 400 “The plain HTTP request was sent to HTTPS port” error
I'm running a Sinatra app behind passenger/nginx. I'm trying to get it to respond to both http and https calls. The problem is, when both are defined in the server block https calls are responded to normally but http yields a 400 "The plain HTTP request was sent to HTTPS port" error. This is for a s...
How to import module when module name has a '-' dash or hyphen in it?
...
you can't. foo-bar is not an identifier. rename the file to foo_bar.py
Edit: If import is not your goal (as in: you don't care what happens with sys.modules, you don't need it to import itself), just getting all of the file's globals into your own scope, you can use execfile
# contents...
How to describe “object” arguments in jsdoc?
... a @config tag which immediately followed the corresponding @param, but it appears to have been deprecated (example here).
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