🐧 Want to know more about your Linux system? Here are some handy commands to gather information:
uname -a: Kernel and system info
lsb_release -a: Distribution details
df -h: Disk space usage
free -m: Memory usage
ifconfig: Network info
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- Using the 'update' Method (All Python Versions):
The 'update' method has been available since Python 2.x and remains a consistent way to merge dictionaries.
- Using the "**" Operator (Python 3.5+):
The "**" operator allows you to merge dictionaries by unpacking their contents, available from Python 3.5 onward.
💡 Daily Tips : Merging Dictionaries in Python
In Python, you can merge two dictionaries using different methods:
- Using the "|" Operator (Python 3.9+):
- Using the "**" Operator (Python 3.5+):
- Using the 'update' Method (All Python Versions):
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**kwargs
**kwargs is used to pass an unlimited number of key-value pairs to a function. This is useful for passing values related to optional keys to the function. **kwargs is used inside the function as a dictionary.
💡 Daily Tips: *args and **kwargs in Python
When writing a function, we often need to pass values to the function. These values are called function arguments.
def add(x, y):
return x + y
print(add(2, 3)) # 5
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- Listing Usernames
cut -d: -f1 /etc/passwd
Splits each line in the /etc/passwd file with a ":" separator and displays the first field of each line, the username.
Linux User Management
- What is the /etc/passwd file?
The /etc/passwd file is a crucial system file that contains user account information in Linux and Unix-based operating systems.
The basic structure of the /etc/passwd file is as follows:
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