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How to erase the file contents of text file in Python?
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In python:
open('file.txt', 'w').close()
Or alternatively, if you have already an opened file:
f = open('file.txt', 'r+')
f.truncate(0) # need '0' when using r+
In C++, you could use something similar.
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Command to list all files in a folder as well as sub-folders in windows
...s of text from a vanilla command prompt, it can be good to append >list.txt to make it output to a file to be more easily used. So the command would be: dir /s /b /o:gn >list.txt
– SubJunk
Jun 28 '19 at 2:55
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Open and write data to text file using Bash?
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#!/bin/bash
cat > FILE.txt <<EOF
info code info
info code info
info code info
EOF
share
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improve this answer
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In-place edits with sed on OS X
...ed-up file. Extending your example:
sed -i.bu 's/oldword/newword/' file1.txt
Will give you two files: one with the name file1.txt that contains the substitution, and one with the name file1.txt.bu that has the original content.
Mildly dangerous
If you want to destructively overwrite the origi...
How do I copy a version of a single file from one git branch to another?
...branch where you want the file to end up:
git checkout otherbranch myfile.txt
General formulas:
git checkout <commit_hash> <relative_path_to_file_or_dir>
git checkout <remote_name>/<branch_name> <file_or_dir>
Some notes (from comments):
Using the commit hash you...
What encoding/code page is cmd.exe using?
...OutputStream("uc-test-"
+ encoding + (writeBom ? "-bom.txt" : "-nobom.txt"));
out.write(bytes);
out.close();
}
}
}
}
The output in the default codepage? Total garbage!
Z:\andrew\projects\sx\1259084>chcp
Active code pag...
Running multiple commands with xargs
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cat a.txt | xargs -d $'\n' sh -c 'for arg do command1 "$arg"; command2 "$arg"; ...; done' _
...or, without a Useless Use Of cat:
<a.txt xargs -d $'\n' sh -c 'for arg do command1 "$arg"; command2 "$arg"; ...; done' _
To ex...
How do you read from stdin?
...;' mode='r' encoding='UTF-8'>
file example
Say you have a file, inputs.txt, we can accept that file and write it back out:
python -c "import sys; sys.stdout.write(sys.stdin.read())" < inputs.txt
Longer answer
Here's a complete, easily replicable demo, using two methods, the builtin function,...
How to Generate unique file names in C#
...sn't matter, use GUIDs.
E.g.:
var myUniqueFileName = string.Format(@"{0}.txt", Guid.NewGuid());
or shorter:
var myUniqueFileName = $@"{Guid.NewGuid()}.txt";
In my programs, I sometimes try e.g. 10 times to generate a readable name ("Image1.png"…"Image10.png") and if that fails (because the ...
Looking for a 'cmake clean' command to clear up CMake output
...ough directories removing files like cmake_install.cmake and CMakeCache.txt , and the CMakeFiles folders.
21 Answers
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