Patched (Ptc) is a conserved 12-pass transmembrane protein receptor that plays an obligate negative regulatory role in the Hedgehog signaling pathway in insects and vertebrates. Patched is an essential gene in embryogenesis for proper segmentation in the fly embryo, mutations in which may be embryonic lethal. Patched functions as the receptor for the Hedgehog protein and controls its spatial distribution, in part via endocytosis of bound Hedgehog protein, which is then targeted for lysosomal degradation.
SSH
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Stands for Secure Shell. SSH is a method of securely communicating with another computer. The secure part of the name means that all data sent via an SSH connection is encrypted. This means if a third party tries to intercept the information being transferred, it would appear scrambled and unreadable. The shell part of the name means SSH is based on a Unix shell, which is a program that interprets commands entered by a user.
Because SSH is based on a Unix shell, standard Unix commands can be used to view, modify, and transfer files from a remote machine once an SSH connection has been established. These commands can either be entered manually using a terminal emulator, or may be sent from a program with a graphical user interface (GUI). This type of program translates user actions, such as opening a folder, to Unix commands (cd [folder name]).
To log into a server using SSH from a terminal program, type: ssh [servername] -l [username].
The -l indicates you are logging in with a username, which is required by most SSH connections (otherwise, it wouldnt be very secure). If the login name is recognized, you will be prompted to enter a password. If the password is correct, your SSH connection will be established. To end the SSH session, type exit followed by the Enter key.
SSH meaning & definition 1 of SSH.