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So I have downloaded a music album from aMule and it is located in the .aMule/Incoming directory. I tried to move it out with the following command:

 mv albumName.rar ~

This left me with a file ~ in .aMule/Incoming which I could not rename because tilde is reserved for home directory. I know I can access it via Nautilus by showing hidden files. How can I pull it out in terminal?

Update This is how it looks like now

   manuzhang@manuzhang-R458-R457:~/.aMule/Incoming$ ls -l
   total 328
   -rw-r--r-- 1 manuzhang manuzhang 297266 2012-03-19 12:07 ~
   -rw-r--r-- 1 manuzhang manuzhang  34479 2011-10-11 19:51 [kat.ph]friends.season.1.with.english.subtitles.torrent
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mv \~ ~/albumName.rar
mv '~' ~/albumName.rar
mv ./~ ~/albumName.rar

You can always protect a character that has a special meaning in the shell by putting a backslash before it.

You can always tell the shell to interpret a sequence literally by putting it inside single quotes. The only character that you can't put inside such a literal string is the single quote itself, since it indicates the end of the literal string. You can use '\'' instead; it means “end of literal, the character ', start of literal”, but you can think of it as a weird way of putting a single quote inside a literal string within single quotes.

The character ~ is only special at the beginning of a path, so if you put a directory indication, ~ will be the name of the file in this directory.

Note that if the file name begins with -, only the last of these three methods will work. This is because - is not special to the shell; it has a special meaning to the command: it indicates an option. Another way of protecting - against this special meaning is to put the special option -- before it: -- on a command line indicates the end of the options, only file names (or other non-option arguments) may come after it.

Note also that the command you show should have copied the file to your home directory, as the ~ character should have been interpreted by the shell. It's possible that you mistyped and created a file that's not called ~. Run ls -q or ls -Q to see if the file name contains an unprintable character. If that doesn't provide any visual indication, try ls | od -t o1, which will show the octal code for each byte in the file name. In ksh, bash or zsh, you can use $'\123' in a command line to specify a character by its octal code. Alternatively, you may be able to find a pattern that matches the file. For example, if you determine that the length of the file name is 3, and that the only other files whose length is 2 are foo and bar, you can move the file with

mv ./[^bf]?? ~/albumName.rar

And if you're willing to use the mouse and the name is composed of printable characters that you don't know how to type: copy-paste the file name from the output of ls.

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Note that usually only GNU tools understand -- to mean the end of options. – Ignacio Vazquez-Abrams Apr 5 '12 at 0:50
@IgnacioVazquez-Abrams Most commands do understand --: it's mandated by POSIX (apart from a few historical exceptions like echo), and it's provided by getopt, so pretty much any command that takes single-character options understands it. – Gilles Apr 5 '12 at 0:54
@manuzhang Are you sure that your file is called ~ (with an ASCII tilde)? Is it maybe called ` ̃ ` or some other visually similar character (which would explain how you created the file in the first place: in the command you show, a tilde should have been interpreted as the home directory)? – Gilles Apr 5 '12 at 0:58
@manuzhang This is not an ASCII tilde, but a U+FF5E FULLWIDTH TILDE, probably typed with a Chinese or Japanese input method. Either use the same input method, or copy-paste the character from the ls output. – Gilles Apr 5 '12 at 1:13
what a mistake!!! Sorry, I should've thought of it myself and saved your time. Anyway, thank you guys. – manuzhang Apr 5 '12 at 1:16

Specify a path to the file.

cat ./~
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cat: ./~: No such file or directory – manuzhang Apr 5 '12 at 0:44

The pasted update shows it is some high-ASCII or Unicode character, not a simple tilde... Can you use mc or another file manager? How about move everything else out of that directory, then using tab completion?

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Since it's not actually a tilde the original problem ("~ is interpreted as the user's home directory") doesn't exist. Simple copy-and-paste (or typing it in using the same IM as when it was originally typed) will work. – Ignacio Vazquez-Abrams Apr 5 '12 at 1:30

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