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The “Save Capture File As” Dialog Box 5.3.2. The “Open Capture File” Dialog Box 5.2.2.

The “Compiled Filter Output” Dialog Box 4.8. The “Capture” Section Of The Welcome Screen 4.5. Building from source under UNIX or Linux 2.8. Installing from packages under FreeBSD 2.7. Installing from portage under Gentoo Linux 2.6.4. Installing from debs under Debian, Ubuntu and other Debian derivatives 2.6.3. Installing from RPMs under Red Hat and alike 2.6.2. Installing the binaries under UNIX 2.6.1. Windows installer command line options 2.3.6. Installing Wireshark under Windows 2.3.1. Obtaining the source and binary distributions 2.3. Reporting Crashes on Windows platforms 2. Reporting Crashes on UNIX/Linux platforms 1.6.8. Reporting Problems And Getting Help 1.6.1. Development And Maintenance Of Wireshark 1.6. Export files for many other capture programs 1.1.6.

Import files from many other capture programs 1.1.5. Live capture from many different network media 1.1.4. Providing feedback about this document 7. Where to get the latest copy of this document? 6. Now that tcpdump has been installed on your system, let's explore the different options and functionalities it offers.Table of Contents Preface 1. This should install the tcpdump utility and solve the "command not found" error. Note that if you're asked to install libcap, type in Yes or Y as it is a core dependency, without which tcpdump will refuse to start up. To install the tcpdump utility on Fedora, CentOS, and RHEL, issue the following command: sudo dnf install tcpdump On Arch-based systems, run: sudo pacman -S tcpdump On Debian/Ubuntu derivatives, run: sudo apt- get install tcpdump

To install tcpdump, fire up the terminal and run the command corresponding to the Linux distro that you're currently using: In case you are unable to run the tcpdump command and are stuck at the " tcpdump: command not found" error, let's learn how to install tcpdump on your Linux machine. So you should be able to use it right away by typing in tcpdump with a sudo prefix. Tcpdump usually comes pre-installed with all mainstream Linux distributions and security-based alternatives.