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How to base64 encode image in linux bash / shell
I'm trying to base64 encode an image in a shell script and put it into variable:
6 Answers
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Can git undo a checkout of unstaged files
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I understand that changes to a 'private' file cannot be undone by git. However, if the file was modified by git (e.g. via git checkout --), I'd expect it to be able to undo that operation, maybe via the reflog. Is that wrong expectati...
Is there StartsWith or Contains in t sql with variables?
...Note that internally these work differently, especially w.r.t. performance and its use of indexes. For example, a query using colName LIKE 'prefix%' will be very fast when colName is indexed, but colName LIKE '%substring%' or colName LIKE '%suffix' will be slow because SQL Server does not create su...
What is http multipart request?
...tipart request is a HTTP request that HTTP clients construct to send files and data over to a HTTP Server. It is commonly used by browsers and HTTP clients to upload files to the server.
What it looks like
See Multipart Content-Type
See multipart/form-data
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Replace None with NaN in pandas dataframe
... which will replace the Python object None, not the string 'None'.
import pandas as pd
import numpy as np
For dataframe:
df = df.fillna(value=np.nan)
For column or series:
df.mycol.fillna(value=np.nan, inplace=True)
share...
How to validate an OAuth 2.0 access token for a resource server?
...749) doesn't clearly define the interaction between a Resource Server (RS) and Authorization Server (AS) for access token (AT) validation. It really depends on the AS's token format/strategy - some tokens are self-contained (like JSON Web Tokens) while others may be similar to a session cookie in t...
Can Vim highlight matching HTML tags like Notepad++?
Vim has support for matching pairs of curly brackets, parentheses, and square brackets. This is great for editing C-style languages like PHP and JavaScript. But what about matching HTML tags?
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ManyRelatedManager object is not iterable
... answered Jan 18 '19 at 10:58
andywandyw
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How does a Linux/Unix Bash script know its own PID?
I have a script in Bash called Script.sh , and it needs to know its own PID (i.e. I need to get PID inside the Script.sh )
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ruby system command check exit code
I have a bunch of system calls in ruby such as the following and I want to check their exit codes simultaneously so that my script exits out if that command fails.
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