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How to replace ${} placeholders in a text file?
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Sed!
Given template.txt:
The number is ${i}
The word is ${word}
we just have to say:
sed -e "s/\${i}/1/" -e "s/\${word}/dog/" template.txt
Thanks to Jonathan Leffler for the tip to pass multiple -e arguments to the same sed invocation.
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How do I run a Python program in the Command Prompt in Windows 7?
... means "overwrite the output file if it already exists"):
ApplyRE infile.txt outfile.txt -o
Say you also have a data file, "C:\some files\some lexicon.txt". The simplest option is to move the file or the script so they're in the same location, but that can get messy, so let's assume that they'll...
How to load program reading stdin and taking parameters in gdb?
... you'd do it like this:
% gdb myprogram
gdb> run params ... < input.txt
This seems to work within emacs too.
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How to replace (or strip) an extension from a filename in Python?
...d do what you want.
import os
print os.path.splitext('/home/user/somefile.txt')[0]+'.jpg'
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Embed git commit hash in a .Net dll
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You can embed a version.txt file into the executable and then read the version.txt out of the executable. To create the version.txt file, use git describe --long
Here are the steps:
Use a Build Event to call git
Right-click on the project and s...
How to append to a file in Node?
...alled:
Asynchronously:
const fs = require('fs');
fs.appendFile('message.txt', 'data to append', function (err) {
if (err) throw err;
console.log('Saved!');
});
Synchronously:
const fs = require('fs');
fs.appendFileSync('message.txt', 'data to append');
But if you append repeatedly to th...
How to open a file using the open with statement
...gle with. You comma-separate them. Your code would then be:
def filter(txt, oldfile, newfile):
'''\
Read a list of names from a file line by line into an output file.
If a line begins with a particular name, insert a string of text
after the name before appending the line to the ...
Getting rid of \n when using .readlines() [duplicate]
I have a .txt file with values in it.
11 Answers
11
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Java FileOutputStream Create File if not exists
...eate with createNewFile() if it doesn't):
File yourFile = new File("score.txt");
yourFile.createNewFile(); // if file already exists will do nothing
FileOutputStream oFile = new FileOutputStream(yourFile, false);
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Get file name from URL
...va.io.File
import java.net.URI
val uri = new URI("http://example.org/file.txt?whatever")
new File(uri.getPath).getName
res18: String = file.txt
Note: URI#gePath is already intelligent enough to strip off query parameters and the protocol's scheme. Examples:
new URI("http://example.org/hey/file....