Windows certutil -decode equivalent in Linux
Decodes base64 text back to binary data.
certutil -decode
base64 -d file.b64
base64 -d file.b64
base64 -d file.b64
Overview
What this command does
On Windows, "certutil -decode" is used to base64 decode a file. On Linux, the closest practical mapping shown here is "base64 -d file.b64". Decodes base64 text back to binary data. This reference is grouped under Text Processing → Encoding.
Windows → Linux context
What changes when you use this on Linux?
Equivalent task, different tool
Windows certutil -decode maps to base64 -d file.b64 for this task. Treat this as a workflow mapping rather than a character-for-character syntax translation.
Portable across the compared distros
The Debian/Ubuntu, Fedora and Arch rows use the same command in this mapping. Package availability or defaults can still vary, so check the installed tool version when an option behaves differently.
For the broader concept behind this mapping, read Linux command-line basics.
Practical tasks
Common use cases
Base64 decode a file
Decodes base64 text back to binary data.
base64 -d file.b64
Base64 decode a file
base64 --help
Show command help when supported
man base64
Open the manual page when installed
Ready to run
Copyable Linux commands
Review paths, device names, package names and permissions before running any command.
base64 -d file.b64
Walkthrough
Examples with explanations
# Windows equivalent: certutil -decode
base64 -d file.b64Reference
Common options and variations
| Command or option | Use |
|---|---|
base64 -d file.b64 | Base64 decode a file |
base64 --help | Show command help when supported |
man base64 | Open the manual page when installed |
Distro differences
Debian/Ubuntu vs Fedora vs Arch
Debian/Ubuntu, Fedora and Arch all use "base64 -d file.b64" for this mapping. The command syntax shown here is portable across the three rows, although installed versions and system defaults can still vary.
| Distribution | Package manager / base | Equivalent command | Difference to notice |
|---|---|---|---|
| Debian/Ubuntu | same command | base64 -d file.b64 |
Same command on this distribution. |
| Fedora | same command | base64 -d file.b64 |
Same command on this distribution. |
| Arch | same command | base64 -d file.b64 |
Same command on this distribution. |
Keep learning