[estools-92-ssh@localhost ~]$ 
[estools-92-ssh@localhost ~]$ kill -9 `pgrep -u estools-92-ssh steam`
kill: usage: kill [-s sigspec | -n signum | -sigspec] [pid | job]... or kill -l [sigspec]
[estools-92-ssh@localhost ~]$ kill -9 `pgrep -u estools-92-ssh hlds`
kill: usage: kill [-s sigspec | -n signum | -sigspec] [pid | job]... or kill -l [sigspec]
[estools-92-ssh@localhost ~]$ kill -9 `pgrep -u estools-92-ssh hltv`
kill: usage: kill [-s sigspec | -n signum | -sigspec] [pid | job]... or kill -l [sigspec]
[estools-92-ssh@localhost ~]$ kill -9 `pgrep -u estools-92-ssh srcds`
[estools-92-ssh@localhost ~]$ kill -9 `pgrep -u estools-92-ssh ucc`
kill: usage: kill [-s sigspec | -n signum | -sigspec] [pid | job]... or kill -l [sigspec]
[estools-92-ssh@localhost ~]$