Windows defrag /L equivalent in Linux
Runs discard/TRIM on mounted filesystems that support it.
defrag /L
sudo fstrim -av
sudo fstrim -av
sudo fstrim -av
Overview
What this command does
On Windows, "defrag /L" is used to trim SSD filesystems. On Linux, the closest practical mapping shown here is "sudo fstrim -av". Runs discard/TRIM on mounted filesystems that support it. This reference is grouped under System & Storage → Disk Maintenance.
Windows → Linux context
What changes when you use this on Linux?
Equivalent task, different tool
Windows defrag /L maps to sudo fstrim -av 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.
Elevated privilege appears in this workflow
At least one example uses sudo. Confirm the target path, device, service or package before running the elevated form; do not add sudo simply to bypass an unexplained permission error.
For the broader concept behind this mapping, read Linux disks, storage and mounts.
Practical tasks
Common use cases
Trim SSD filesystems
Runs discard/TRIM on mounted filesystems that support it.
sudo fstrim -av
Trim SSD filesystems
sudo --help
Show command help when supported
man sudo
Open the manual page when installed
Ready to run
Copyable Linux commands
Review paths, device names, package names and permissions before running any command.
sudo fstrim -av
Walkthrough
Examples with explanations
# Windows equivalent: defrag /L
sudo fstrim -avReference
Common options and variations
| Command or option | Use |
|---|---|
sudo fstrim -av | Trim SSD filesystems |
sudo --help | Show command help when supported |
man sudo | Open the manual page when installed |
Distro differences
Debian/Ubuntu vs Fedora vs Arch
Debian/Ubuntu, Fedora and Arch all use "sudo fstrim -av" 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 | sudo fstrim -av |
Same command on this distribution. |
| Fedora | same command | sudo fstrim -av |
Same command on this distribution. |
| Arch | same command | sudo fstrim -av |
Same command on this distribution. |
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