Watch Terminal Activity

General Information

Have you ever had a user login to your box and then ask you for help? Or have you ever been curious as to what your users are doing on your system? The watch(8) utility will let you snoop another tty, allowing you to see what your other users are doing and even interact with them. adidas football ugg australia discount timberland homme It’s a must-have utility for every network administrator.


  1. Local root access on the box or be able to su to root.
  2. A SSH client that supports ANSI colors such as puTTy or SecureCRT (if you aren’t on the box).
  3. Your favorite text editor (I prefer nano)


For the 5.x branch, there is no installation needed. Everything required for watch is already installed.

For the 4.x branch, we have to compile a kernel with snp support. asics gel lyte 5 nike air zoom pegasus asics soldes nike kwazi soldes adidas superstar soldes So, add the following to your kernel configuration:

 # nano -w /usr/src/sys/i386/conf/MYKERNEL ***output omitted*** pseudo-device snp 4 ***output omitted*** 

This compiles the snp snooping utility and you can change the 4 to however many terminals you plan on watching at any given time. ugg promo chaussures ugg femme Now, compile and install your kernel.


You need to know which tty you wish to watch, so if you don’t know it you can find out.

 # who jon ttyp0 Oct 19 12:10 ( steve ttyp1 Oct 19 12:15 ( 

Let’s say we want to see what steve is up to. air jordan future adidas zx 500 bns gold nike air max 90 adidas stan smith nike air max 2013 The syntax is:

Note: You must aquire root priveleges first as watch(8) can only be used as root. air jordan soldes new balance femme nike air zoom pegasus
 # watch [options] tty 

We can simply issue the following to see what he is doing:

 # watch ttyp1 

Now, if steve is requesting help, you can interactively watch his terminal with:

 # watch -W ttyp1 

Whatever he types, you see and whatever you type, he sees. ugg bottes chaussures ugg pour femme asics tiger nike pas cher It’s a beautiful thing. nike pas cher asics gel quantum 360 timberland soldes Now the next thing to know is what you can do once you are in watch.

  Exit watch.  adidas nmd adidas ultra boost nike homme solde Adidas Zx pas cher  Clear screen. nike air max 1 ugg femme france  Change attached tty, unless this feature is disabled, in which case control-X is passed to the terminal as with other control characters.    

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