Using or ‘|’ in regex [duplicate]

It’s because you are trying to match against the entire string instead of the part to find. For example, this code will find that only a part of the string is conforming to the present regex: When you want to match an entire string and check if that string contains he|be|de use this regex .*(he|be|de).* . means … Read more

Istio Ingress resulting in “no healthy upstream”

Although this is a somewhat general error resulting from a routing issue within an improper Istio setup, I will provide a general solution/piece of advice to anyone coming across the same issue. In my case the issue was due to incorrect route rule configuration, the Kubernetes native services were functioning however the Istio routing rules … Read more

Using “with open() as file” method, how to write more than once? [duplicate]

The w flag means “open for writing and truncate the file”; you’d probably want to open the file with the a flag which means “open the file for appending”. Also, it seems that you’re using Python 2. You shouldn’t be using the b flag, except in case when you’re writing binary as opposed to plain text content. In Python 3 your … Read more

How to use execvp() to execute a command

The prototype of execvp is It expects a pointer to char as the first argument, and a NULL-terminated pointer to an array of char*. You are passing completely wrong arguments. You are passing a single char as first argument and a char* as the second. Use execlp instead: So Also the convention in UNIX is to print error messages to stderr and a process with an error should have … Read more

error: src refspec master does not match any

From git branch it appears that somehow your local branch name is “origin”. You can rename the branch with -mv flag, like this: git branch -mv origin master After this git branch should show master 🙂 Just to make sure the name is indeed the only thing that went astray, you can run git log and look at the last few commits – and compare … Read more

CSS reset – What exactly does it do?

In the beginning, there was no standardisation on how styles worked, each browser implemented what it felt was right. One of the reasons you see so many questions about style errors in IE is because IE was the browser with the most dissimilarities from other browsers in terms of styling. Though IE has improved and … Read more

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)