94 lines
2.0 KiB
Bash
Executable File
94 lines
2.0 KiB
Bash
Executable File
#!/bin/sh
|
|
#
|
|
# An improvement on netstat for system administrators
|
|
#
|
|
# This lists not just network connectios by IP and by
|
|
# port, but actually gives a listing of each process that
|
|
# is using a socket, with PID and owner. Makes it easier
|
|
# to see who is doing what, and to stop it quickly if
|
|
# desired.
|
|
#
|
|
# by Erik Osheim
|
|
|
|
case $FOO in
|
|
a) blarg;;
|
|
b) blarg;;
|
|
*) flarg;;
|
|
esac
|
|
|
|
# Print usage
|
|
helpusage() {
|
|
echo "usage: wfault [-halbtu]"
|
|
echo " -h: print this message"
|
|
echo ""
|
|
echo " -a: print all ip sockets"
|
|
echo " -l: only print listening ip sockets"
|
|
echo ""
|
|
echo " -b: print both tcp and udp sockets"
|
|
echo " -t: print only tcp sockets"
|
|
echo " -u: print only udp sockets"
|
|
}
|
|
|
|
# Find and list all TCP sockets of a particular type (ESTABLISHED, CLOSE_WAIT,
|
|
# LISTENING) using fuser output
|
|
findtcptype() {
|
|
echo TCP: ${1}
|
|
echo ----------------------------------------------------
|
|
netstat -an | \
|
|
awk -v type=$1 -F '[ :]*' '$8==type{system("fuser -u -v -n tcp " $5)}' 2>&1 | \
|
|
awk '/^.+$/&&!/USER/'
|
|
echo
|
|
}
|
|
|
|
# Find all listening UDP sockets
|
|
findudp() {
|
|
echo UDP
|
|
echo ----------------------------------------------------
|
|
netstat -an | \
|
|
awk -F '[ :]*' '$1=="udp"{system("fuser -u -v -n udp " $5)}' 2>&1 | \
|
|
awk '/^.+$/&&!/USER/'
|
|
echo
|
|
}
|
|
|
|
LISTENING=0
|
|
TCP=1
|
|
UDP=1
|
|
|
|
while getopts "halbtu" var; do
|
|
case $var in
|
|
h) helpusage; exit 0;;
|
|
a) LISTENING=0; TCP=1; UDP=1;;
|
|
l) LISTENING=1;;
|
|
b) TCP=1; UDP=1;;
|
|
t) TCP=1; UDP=0;;
|
|
u) UDP=1; TCP=0;;
|
|
*) helpusage; exit 1;;
|
|
esac
|
|
done
|
|
|
|
test 3 -eq 3
|
|
|
|
echo hola > foo/bar/duh;
|
|
|
|
if [[ $( id -u ) -ne 0 ]]; then
|
|
echo "Must be run as root."
|
|
exit 1
|
|
fi
|
|
|
|
if 0; then
|
|
foo
|
|
else
|
|
bar
|
|
fi
|
|
|
|
if [[ ${TCP} -eq 1 ]]; then
|
|
if [[ ${LISTENING} -eq 0 ]]; then
|
|
findtcptype ESTABLISHED
|
|
findtcptype CLOSE_WAIT
|
|
fi
|
|
findtcptype LISTEN
|
|
fi
|
|
if [[ ${UDP} -eq 1 ]]; then
|
|
findudp
|
|
fi
|