SSH-ADD(1) General Commands Manual SSH-ADD(1) ssh-add - OpenSSH ssh-add [-CcDdKkLlNqvXx] [-E fingerprint_hash] [-H hostkey_file] [-h destination_constraint] [-S provider] [-t life] [file ...] ssh-add -s pkcs11 [-Cv] [certificate ...] ssh-add -e pkcs11 ssh-add -T pubkey ... ssh-add -Q ssh-add ssh-agent(1). ~/.ssh/id_rsa ~/.ssh/id_ecdsa ~/.ssh/id_ecdsa_sk ~/.ssh/id_ed25519 ~/.ssh/id_ed25519_sk. ssh-add -cert.pub . . ssh-add . tty . ssh-add . SSH_AUTH_SOCK ssh-add. : -C . -c . ssh-askpass(1). ssh-askpass(1) . -D . -d . ssh-add . . ssh-add .pub . "-" ssh-add . -E fingerprint_hash . : "md5" "sha256". "sha256". -e pkcs11 PKCS#11 pkcs11. -H hostkey_file -h. . ssh-add ssh_config(5): ~/.ssh/known_hosts ~/.ssh/known_hosts2 /etc/ssh/ssh_known_hosts /etc/ssh/ssh_known_hosts2. -h destination_constraint . `[user@]dest-hostname' ( ssh-agent(1)) . `src-hostname>[user@]dst-hostname' ssh-agent(1) ( `src-hostname') `dst-hostname'. . ssh-agent(1) . `host-b' `host-c' `host-b' `host-b>host-c' . ssh-add. . ssh-add . OpenSSH 8.9. SSH ssh-agent(1) . ssh-agent(1) ssh(1). SSH_AUTH_SOCK ( ). -K FIDO. -k . -L . -l . -N ssh-add . . -Q . : . -q . -S provider FIDO USB HID . -s pkcs11 pkcs11. . PKCS#11. -T pubkey ... pubkey . -t . sshd_config(5). -v . ssh-add . . -v . 3. -X . -x . DISPLAY, SSH_ASKPASS and SSH_ASKPASS_REQUIRE ssh-add . ssh-add DISPLAY SSH_ASKPASS SSH_ASKPASS ( "ssh-askpass") X11 . ssh-add .xsession . SSH_ASKPASS_REQUIRE askpass. "never" ssh-add . "prefer" ssh-add askpass TTY . "force" askpass DISPLAY . SSH_AUTH_SOCK UNIX-domain . SSH_SK_PROVIDER FIDO USB HID . ~/.ssh/id_ecdsa ~/.ssh/id_ecdsa_sk ~/.ssh/id_ed25519 ~/.ssh/id_ed25519_sk ~/.ssh/id_rsa ECDSA ECDSA Ed25519 Ed25519 RSA . . ssh-add . 0 1 2 ssh-add . ssh(1), ssh-agent(1), ssh-askpass(1), ssh-keygen(1), sshd(8) OpenSSH ssh 1.2.12 Tatu Ylonen. Aaron Campbell Bob Beck Markus Friedl Niels Provos Theo de Raadt Dug Song OpenSSH. Markus Friedl SSH 1.5 2.0. 3: https://www.gnu.org/licenses/gpl-3.0.html . . : kde-l10n-ar@kde.org Linux 6.12.107+deb13-amd64 $Mdocdate: 5 2026 $ Linux 6.12.107+deb13-amd64