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Enter a command. For example: ajson, llvm nm, pdftex, clang format.

write

Write a message on the terminal of a specified logged in user (ctrl-C to stop writing messages). Use the who command to find out all terminal_ids of all active users active on the system. See also mesg. More information: https://manned.org/write.

• Send a message to a given user on a given terminal id:
   
  write {{username}} {{terminal_id}}
   
• Send message to "testuser" on terminal /dev/tty/5:
   
  write {{testuser}} {{tty/5}}
   
• Send message to "johndoe" on pseudo terminal /dev/pts/5:
   
  write {{johndoe}} {{pts/5}}