Excellent Utilities: croc – securely transfer files and folders

Last Updated on May 13, 2023

This series highlights best-of-breed utilities. We cover a wide range of utilities including tools that boost your productivity, help you manage your workflow, and lots more besides.

There are many ways you can transfer files between computers. Here’s a few methods. We can transfer files between two hosts on Linux using the scp command. The scp command establishes a secure connection between the two hosts and it uses the standard SSH port in order to transfer files. Alternatively, many people send files as attachments although there are often limitations with this method. Or users frequently use file hosting services in the cloud, WebTorrents, a personal server, wormhole and many others.

We are always on the look out for easy, simple and secure ways to transfer files and folders. croc is such a tool. It’s open source software written in Go and makes transfers really simple.


We tested the software on a variety of different systems. The developer provides binaries for Linux, FreeBSD, NetBSD, OpenBSD, macOS, and Windows. There are also binaries for ARM architecture for Linux and Windows.

For Linux systems, installation depends on what distro you are running. There are packages available for some distros including Ubuntu and Manjaro.

On our 64-bit Ubuntu systems, we installed the software with the following commands:

First download the deb package with the wget command:

$ wget https://github.com/schollz/croc/releases/download/v9.5.0/croc_9.5.0_Linux-64bit.deb

Next, install the deb package using dpkg and elevated privileges:

$ sudo dpkg -i croc_9.5.0_Linux-64bit.deb

The software needs to be installed on both the sending PC and the receiving PC.

Next page: Page 2 – In Operation

Pages in this article:
Page 1 – Introduction / Installation
Page 2 – In Operation
Page 3 – Summary

Complete list of articles in this series:

Excellent Utilities
AES CryptEncrypt files using the Advanced Encryption Standard
AnanicyShell daemon created to manage processes’ IO and CPU priorities
brootNext gen tree explorer and customizable launcher
CerebroFast application launcher
cheat.shCommunity driven unified cheat sheet
CopyQAdvanced clipboard manager
crocSecurely transfer files and folders from the command-line
DeskreenLive streaming your desktop to a web browser
dufDisk usage utility with more polished presentation than the classic df
ezaA turbo-charged alternative to the venerable ls command
Extension ManagerBrowse, install and manage GNOME Shell Extensions
fdWonderful alternative to the venerable find
fkillKill processes quick and easy
fontpreviewQuickly search and preview fonts
horcruxFile splitter with encryption and redundancy
KoohaSimple screen recorder
KOReaderDocument viewer for a wide variety of file formats
ImagineA simple yet effective image optimization tool
LanguageToolStyle and grammar checker for 30+ languages
Liquid PromptAdaptive prompt for Bash & Zsh
lnavAdvanced log file viewer for the small-scale; great for troubleshooting
lsdLike exa, lsd is a turbo-charged alternative to ls
Mark TextSimple and elegant Markdown editor
McFlyNavigate through your bash shell history
mdlessFormatted and highlighted view of Markdown files
notiMonitors a command or process and triggers a notification
NushellFlexible cross-platform shell with a modern feel
nvitopGPU process management for NVIDIA graphics cards
OCRmyPDFAdd OCR text layer to scanned PDFs
Oh My ZshFramework to manage your Zsh configuration
PaperworkDesigned to simplify the management of your paperwork
pastelGenerate, analyze, convert and manipulate colors
PDF Mix ToolPerform common editing operations on PDF files
pecoSimple interactive filtering tool that's remarkably useful
ripgrepRecursively search directories for a regex pattern
RnoteSketch and take handwritten notes
scrcpyDisplay and control Android devices
StickySimulates the traditional “sticky note” style stationery on your desktop
tldrSimplified and community-driven man pages
tmuxA terminal multiplexer that offers a massive boost to your workflow
TuskAn unofficial Evernote client with bags of potential
UlauncherSublime application launcher
WatsonTrack the time spent on projects
Whoogle SearchSelf-hosted and privacy-focused metasearch engine
ZellijTerminal workspace with batteries included
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