kill -9 killall -9 game # this also works
We can now kill the process if we want to free up the sound card. So generally you’ll want to either dump it do a disk (via lsof > lsof-output.txt) or filter it using various pipe commands.įor example, if one wants to see if the special file /dev/dsp (the sound card) is open by any processes, we run the following command: lsof|grep dsp Usually, lsof outputs too much information to even fit in konsole’s scroll buffer. The information in the columns is mostly straightforward. The output of lsof typically looks like this: lsofĬOMMAND PID USER FD TYPE DEVICE SIZE NODE NAME This simple command often ran with no arguments, and does just what it says: lists every single open file by every program running at the time. For example, if a spyware or other malware program was sending information from your computer to the Internet or to a file on your hard disk, it would show up in the output of these commands. One evident advantage this capability is security. This article introduces two very useful Linux commands: lsof, and netstat which will give you a complete list of all open files or network connections on your system along with their corresponding processes. If the port is not yet established, the port number is shown as an asterisk (*).Among the many benefits of using the Linux Operating system, lies the ability to obtain extensive information about the processes running at any given moment and the resources they consume. The names that corresponds to the IP address and the port are shown unless the -n parameter is specified. The IP address and port number of the remote computer to which the socket is connected. If the port is not yet established, the port number is shown as an asterisk (*). The name of the local computer that corresponds to the IP address and the name of the port is shown unless the -n parameter is specified. The IP address of the local computer and the port number being used. The netstat command provides statistics for the following: Parameter
If this parameter is omitted, this command prints the selected information only once. Redisplays the selected information every interval seconds. This is equivalent to the route print command.
The -p parameter can be used to specify a set of protocols.ĭisplays the contents of the IP routing table. If the IPv6 protocol is installed, statistics are shown for the TCP over IPv6, UDP over IPv6, ICMPv6, and IPv6 protocols. By default, statistics are shown for the TCP, UDP, ICMP, and IP protocols. If this parameter is used with -s to display statistics by protocol, Protocol can be tcp, udp, icmp, ip, tcpv6, udpv6, icmpv6, or ipv6.ĭisplays statistics by protocol. In this case, the Protocol can be tcp, udp, tcpv6, or udpv6. Shows connections for the protocol specified by Protocol. This parameter can be combined with -a, -n, and -p.
You can find the application based on the PID on the Processes tab in Windows Task Manager. This parameter can be combined with -s.ĭisplays active TCP connections, however, addresses and port numbers are expressed numerically and no attempt is made to determine names.ĭisplays active TCP connections and includes the process ID (PID) for each connection. Note that this option can be time-consuming and will fail unless you have sufficient permissions.ĭisplays Ethernet statistics, such as the number of bytes and packets sent and received. In this case the executable name is in at the bottom, on top is the component it called, and so forth until TCP/IP was reached. In some cases well-known executables host multiple independent components, and in these cases the sequence of components involved in creating the connection or listening port is displayed. Syntax netstat ĭisplays all active TCP connections and the TCP and UDP ports on which the computer is listening.ĭisplays the executable involved in creating each connection or listening port. This command is available only if the Internet Protocol (TCP/IP) protocol is installed as a component in the properties of a network adapter in Network Connections.