how to append on file in IO redirection

ByAnurag batra August 6, 2022June 30, 2022

cmd >>file.txt 2>&1

>>file.txt: Open file.txt in append mode and redirect stdout there.
2>&1: Redirect stderr to "where stdout is currently going". In this case, that is a file opened in append mode. In other words, the &1 reuses the file descriptor which stdout currently uses.

Here is what the above code is Doing:
1. Open file.txt in append mode and redirect stdout there.
2. Redirect stderr to “where stdout is currently going”. In this case, that is a file opened in append mode. In other words, the &1 reuses the file descriptor which stdout currently uses.

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ByAnurag batra July 24, 2022June 30, 2022

git reset HEAD~ Here is what the above code is Doing: 1. git reset HEAD~ 2. git add . 3. git commit -m “message” 4. git push origin master

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ByAnurag batra August 3, 2022June 30, 2022

sudo apt-get install python3-venv python3 -m venv .venv Here is what the above code is Doing: 1. Create a virtual environment in the current directory. 2. Activate the virtual environment. 3. Install the requests package. 4. Deactivate the virtual environment.

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ByAnurag batra July 31, 2022June 30, 2022

find / -name NAME.EXTENSION Here is what the above code is Doing: 1. The first line is a shebang. It tells the computer that this file is a Python script. 2. The second line is a comment. It’s ignored by the computer. 3. The third line is a docstring. It’s ignored by the computer, but…

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