01. Using command line ssh over ssh

0. (on windows) Run "Git bash" unix-like commandline

   • tune font size and appearance
   • use only fixed-width fonts

1. Connect ssh user@server

2. Attach demo screen

   • Teacher: start shared terminal session: tmux -S /tmp/demo.shared; chgrp students /tmp/demo.shared

   • Student: connect to shared terminal session: tmux -S /tmp/demo.shared attach -r

3. Student: open second git bash again and do another ssh user@server

From now on teacher can show all he wants, and student can observe and re-produce on his second terminal connection

Code - compile - run

• ls files
• make an unique directory
• cd there
• ls (no files)
• mcedit file.c
  • this program

       1   #include <stdio.h>
       2   int main(int argc, char *argv[]) {
       3       int i;
       4       for(i=0; i<argc; i++)
       5           printf("%d parameter: %s\n", i, argv[i]");
       6       return 0;
       7   }
    

    • F2 save, ESC ESC exit

  • complie: cc file.c

  • correct errors if any

  • run with ./a.out

  • compile cc file.c -o prog

  • run ./prog

Command arguments

Try run:

• ./prog 1 2 3

• ./prog weqr rtgh yt

• ./prog wqe       sdfsd         sfds

• ./prog "sa sa fsa f" 'sdfsdf sdfsfs s'

Use scp

• disconnect from server (do not forget! )

• create any file:

   $ echo sdaf sadfsad fsadf > unique.file.name

• copy file to server with:

   $ scp unique.file.name user@server:

  • (mind ":" at the end)

• ssh back to server

• ls and see all the files`

H/W

Make sure you can connect to sugon server over ssh