tail: troll: file truncated

Question

Background

When you run tail -f file in bash, the file is outputted and then any subsequent appends.

However, when you remove something that has already been displayed, tail outputs:

tail: nameoffile: file truncated

Your Challenge

When given an input f, append tail: [value of f]: file truncated (with trailing & leading newline) to the file f. You can assume that file f exists, the device is not full, f is not empty, and that you have permissions to write to f.

Test Cases

Input: something

File before:

Some
thing

File after:

Some
thing
tail: something: file truncated

Input relative/path/to/file

File before:

tail: relative/path/to/file: file truncated

File after:

tail: relative/path/to/file: file truncated
tail: relative/path/to/file: file truncated

Reference Implementation (Node.js)

x=>require("fs").appendFileSync(x,`
tail: ${x}: file truncated
`)

Answer 1

Bash, 4̴0̴ 4̴6̴ 33 bytes

echo tail: $1: file truncated>>$1

Try it online!

Thanks @DigitalTrauma for -7 bytes!

Answer 2

Pyth - 33 bytes

.w%"\ntail: %s: file truncated"QQ

Answer 3

Python 3, 61 bytes

f=input();open(f,"a").write("\ntail: %s: file truncated\n"%f)

Can't really try it online... Try it online!

Answer 4

Batch, 47 bytes

@echo(>>%1
@echo tail: %~1: file truncated>>%1

Assuming DOS newlines are acceptable on Windows...