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How to check whether a file is empty or not?
...e file open you could try this:
>>> with open('New Text Document.txt') as my_file:
... # I already have file open at this point.. now what?
... my_file.seek(0) #ensure you're at the start of the file..
... first_char = my_file.read(1) #get the first character
... if not fir...
How to use sed to remove the last n lines of a file
...
I don't know about sed, but it can be done with head:
head -n -2 myfile.txt
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What is the “Execute Around” idiom?
...{
stream.close();
}
}
// Calling it
executeWithFile("filename.txt", new InputStreamAction()
{
public void useStream(InputStream stream) throws IOException
{
// Code to use the stream goes here
}
});
// Calling it with Java 8 Lambda Expression:
executeWithFile("filen...
How to use double or single brackets, parentheses, curly braces
...n specify file paths as script input/output. if I specify $SRC_ROOT/myFile.txt or ${SRC_ROOT}/myFile.txt (SRC_ROOT var is exported by the build system) - doesn't work. only $(SRC_ROOT)/myFile.txt works. What could be the reason? clearly var name isn't a command?
– Motti Shneor
...
What does the @ symbol before a variable name mean in C#? [duplicate]
...typically you would need to do this:
var myString = "c:\\myfolder\\myfile.txt"
alternatively you can do this:
var myString = @"c:\myFolder\myfile.txt"
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How to write a UTF-8 file with Java?
...mons.
You should be able to do something like:
File f = new File("output.txt");
FileUtils.writeStringToFile(f, document.outerHtml(), "UTF-8");
This will create the file if it does not exist.
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Remove .php extension with .htaccess
... file still has .php appended to the request internally. A request for 'hi.txt' will put this in your error logs:
[Tue Oct 26 18:12:52 2010] [error] [client 71.61.190.56] script '/var/www/test.peopleareducks.com/rewrite/hi.txt.php' not found or unable to stat
But there is another option, set the ...
Replace a string in shell script using a variable
...e, you need to use double-quotes like
sed -i "s#12345678#$replace#g" file.txt
This will break if $replace contain special sed characters (#, \). But you can preprocess $replace to quote them:
replace_quoted=$(printf '%s' "$replace" | sed 's/[#\]/\\\0/g')
sed -i "s#12345678#$replace_quoted#g" fil...
source command not found in sh shell
...trying to call source command from #Jenkins execute shell.
source profile.txt
or
source profile.properties
Replacement for source command is to use,
. ./profile.txt
or
. ./profile.properties
Note: There is a space between the two dots(.)
...
Count occurrences of a char in a string using Bash
...le lines of input are also good for this solution, like command cat mytext.txt | tr -cd 'e' | wc -c can counts e in the file mytext.txt, even thought the file may contain many lines.
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