error: gpg failed to sign the data fatal: failed to write commit object'

 step 1. test

 ~ % echo "test" | gpg --clearsign
Warning: Failed to set locale category LC_NUMERIC to en_CN.
Warning: Failed to set locale category LC_TIME to en_CN.
Warning: Failed to set locale category LC_COLLATE to en_CN.
Warning: Failed to set locale category LC_MONETARY to en_CN.
Warning: Failed to set locale category LC_MESSAGES to en_CN.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

test
gpg: signing failed: Inappropriate ioctl for device
gpg: [stdin]: clear-sign failed: Inappropriate ioctl for device

note: If you want a legible result you can use: gpg --clearsign [Data] this will make sure that the results are clearly legible

 

above error's solution is :

export GPG_TTY=$(tty)

---

list your keys 

gpg --list-keys

deleting your own key

a. delete the private key 

gpg --delete-secret-key key-ID

b. delete the pulbic key 

gpg --delete-key key-ID

 

references:

1. https://github.com/pstadler/keybase-gpg-github/issues/24

2. https://github.com/keybase/keybase-issues/issues/2798

3. http://blog.chapagain.com.np/gpg-remove-keys-from-your-public-keyring/