installed, install libpcap first. Your system might provide a version
of libpcap that can be installed; if so, to compile tcpdump you might
need to install a "developer" version of libpcap as well as the
-"run-time" version. You can also install tcpdump.org's version of
+"run-time" version. You can also install The Tcpdump Group version of
libpcap; see [this file](README.md) for the location.
You will need a C99 compiler to build tcpdump. The build system
variable like:
`AUTOCONF_VERSION=2.69 make`
-If everything builds ok, `su` and type `make install`. This will install
+If everything builds fine, `su` and type `make install`. This will install
tcpdump and the manual entry. Any user will be able to use tcpdump to
read saved captures. Whether a user will be able to capture traffic
depends on the OS and the configuration of the system; see the
[tcpdump man page](https://www.tcpdump.org/manpages/tcpdump.1.html)
-for details. DO NOT give untrusted users the ability to
+for details. Do *NOT* give untrusted users the ability to
capture traffic. If a user can capture traffic, he or she could use
utilities such as tcpdump to capture any traffic on your net, including
passwords.
Note that most systems ship tcpdump, but usually an older version.
Building tcpdump from source as explained above will usually install the
binary as `/usr/local/bin/tcpdump`. If your system has other tcpdump
-binaries, you might need to deinstall these or to set the PATH environment
+binaries, you might need to deinstall these or to set the `PATH` environment
variable if you need the `tcpdump` command to run the new binary
(`tcpdump --version` can be used to tell different versions apart).
-If your system is not one which we have tested tcpdump on, you may have
+If your system is not one that we have tested tcpdump on, you may have
to modify the `configure` script and `Makefile.in`. Please
[send us patches](https://www.tcpdump.org/index.html#patches)
for any modifications you need to make.