This is the command ssh-add that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
ssh-add — adds private key identities to the authentication agent
SYNOPSIS
ssh-add [-cDdkLlXx] [-E fingerprint_hash] [-t life] [file ...]
ssh-add -s pkcs11
ssh-add -e pkcs11
DESCRIPTION
ssh-add adds private key identities to the authentication agent, ssh-agent(1). When run
without arguments, it adds the files ~/.ssh/id_rsa, ~/.ssh/id_dsa, ~/.ssh/id_ecdsa,
~/.ssh/id_ed25519 and ~/.ssh/identity. After loading a private key, ssh-add will try to
load corresponding certificate information from the filename obtained by appending -cert.pub
to the name of the private key file. Alternative file names can be given on the command
line.
If any file requires a passphrase, ssh-add asks for the passphrase from the user. The
passphrase is read from the user's tty. ssh-add retries the last passphrase if multiple
identity files are given.
The authentication agent must be running and the SSH_AUTH_SOCK environment variable must
contain the name of its socket for ssh-add to work.
The options are as follows:
-c Indicates that added identities should be subject to confirmation before being used
for authentication. Confirmation is performed by ssh-askpass(1). Successful
confirmation is signaled by a zero exit status from ssh-askpass(1), rather than text
entered into the requester.
-D Deletes all identities from the agent.
-d Instead of adding identities, removes identities from the agent. If ssh-add has
been run without arguments, the keys for the default identities and their
corresponding certificates will be removed. Otherwise, the argument list will be
interpreted as a list of paths to public key files to specify keys and certificates
to be removed from the agent. If no public key is found at a given path, ssh-add
will append .pub and retry.
-E fingerprint_hash
Specifies the hash algorithm used when displaying key fingerprints. Valid options
are: “md5” and “sha256”. The default is “sha256”.
-e pkcs11
Remove keys provided by the PKCS#11 shared library pkcs11.
-k When loading keys into or deleting keys from the agent, process plain private keys
only and skip certificates.
-L Lists public key parameters of all identities currently represented by the agent.
-l Lists fingerprints of all identities currently represented by the agent.
-s pkcs11
Add keys provided by the PKCS#11 shared library pkcs11.
-t life
Set a maximum lifetime when adding identities to an agent. The lifetime may be
specified in seconds or in a time format specified in sshd_config(5).
-X Unlock the agent.
-x Lock the agent with a password.
ENVIRONMENT
DISPLAY and SSH_ASKPASS
If ssh-add needs a passphrase, it will read the passphrase from the current terminal
if it was run from a terminal. If ssh-add does not have a terminal associated with
it but DISPLAY and SSH_ASKPASS are set, it will execute the program specified by
SSH_ASKPASS (by default “ssh-askpass”) and open an X11 window to read the
passphrase. This is particularly useful when calling ssh-add from a .xsession or
related script. (Note that on some machines it may be necessary to redirect the
input from /dev/null to make this work.)
SSH_AUTH_SOCK
Identifies the path of a UNIX-domain socket used to communicate with the agent.
Use ssh-add online using onworks.net services
