How to write string to a file using script ?

RouterOS Scripting
1

How to write string to a file using script ? Please provide a command or function, THX

2

http://wiki.mikrotik.com/wiki/Manual:Scripting

3 
# Create a file with specific content.
{
# Variables.
    :local filename "test.txt"
    :local content "This is a test."
    
# Create file.
    /file print file=$filename
# Set file's content.
    /file set $filename contents=$content
}

Be aware that there is a maximum file size that RouterOS will allow you to access using scripts.
I forget the size and method though, but at some point [/file get $filename contents] just starts either giving blank results or throw errors.

4

your script is not working

5

Your comment is not helping.
Jokes aside. Helps if you tell me how it isn’t working or what is going wrong.

You might need a delay between creating the file and changing the content.

# Create a file with specific content.
{
# Variables.
    :local filename "test.txt"
    :local content "This is a test."
    
# Create file.
    /file print file=$filename where name=""
# Wait for the file to be created.
    :delay 1
# Set file's content.
    /file set $filename contents=$content
}

Works for me, but there are times when this will stop working and if it takes too long to create the file it won’t be able to write.

6

also note, due to mikrotik’s implementation, variable value sizes can be up to 4096 bytes.
this ultimately limits the file size you create this way.