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Windows DEL Command: Delete Files Safely From CMD

#windows #commandline #beginners #tutorial

The Windows DEL command (also known as ERASE) removes one or more files from Command Prompt. When you are cleaning temp folders, pruning build artifacts, or wiping test outputs, it is faster — and more scriptable — than clicking through File Explorer. Used carelessly, it is also one of the easiest ways to lose work. This guide focuses on safe patterns first.

For the official reference, see Microsoft Learn’s del command.

What does DEL do? 

del notes.tmp
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That deletes notes.tmp from the current directory. Relative paths resolve from where you are now. Confirm that with cd before you delete anything important.

erase is the same command with a different name:

erase notes.tmp
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Confirm before you delete: /P

The single most important safety flag is /P. It asks you to confirm each file before removing it:

del /P *.tmp
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CMD prints something like Delete (Y/N)? for every match. Answer Y to delete that file, N to skip it. Use /P whenever you are not 100% sure the wildcard is right.

Quiet mode vs prompts: /Q

By default, deleting a wildcard pattern can trigger a “Are you sure (Y/N)?” prompt. To skip that confirmation (common in scripts):

del /Q *.log
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/Q means quiet. Pair it with a tight wildcard you have already tested with dir first:

dir *.log
del /Q *.log
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Never start with /Q on a broad pattern like *.* until you have previewed the match list.

Force read-only deletes: /F

Read-only files normally refuse to delete. /F forces removal of read-only attributes and deletes the file:

del /F locked.txt
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Useful for cleaning build caches. Dangerous if you did not mean to touch that file — combine with /P when exploring:

del /F /P *.bak
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Include subfolders: /S

/S deletes matching files in the current folder and every subdirectory:

del /S *.tmp
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This is powerful and easy to overreach. Always preview with dir /S first:

dir /S *.tmp
del /S /P *.tmp
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/P with /S walks the tree and confirms file by file — slow, but safe while you learn the pattern.

Attribute filters: /A

/A lets you target files by attributes (hidden, system, read-only, archive, and more). Example — delete only hidden matches:

del /A:H *.tmp
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Attribute letters follow the same style as dir /A. Prefer explicit filters over “delete everything and hope.”

Useful workflows

Preview, then delete 

dir *.tmp
del /P *.tmp
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Clean a known temp pattern quietly 

del /Q C:\builds\out\*.obj
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Wipe read-only leftovers after a failed build 

del /F /Q C:\builds\out\*.pdb
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Recursive cleanup with confirmation 

del /S /P *.log
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DEL vs File Explorer

Need Why DEL helps
Exact patterns Wildcards beat hunting files by hand
Scripts / automation Repeatable cleanup in a .bat file
Already in a prompt No context switch to Explorer
Safety prompts /P confirms each match before it goes

Common mistakes

Wrong current directory

Relative deletes always resolve from the current directory. If the “wrong” files disappear, check where you are:

cd
dir
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Prefer a full path when the stakes are high:

del /P C:\Users\Public\temp\*.tmp
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Deleting folders with DEL

del removes files, not directories. Empty folders stay behind. To remove a directory tree, use rmdir / rd (often with /S) after the files are gone — that is a separate command with its own risks.

Broad wildcards + quiet mode

This combination is the classic foot-gun:

del /Q *.*
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If you must clear a folder of files, preview with dir first, prefer a narrower pattern, and use /P until the habit sticks.

Assuming Recycle Bin

Files removed with del do not go to the Recycle Bin. Recovery means backups, shadow copies, or undo tools — not Ctrl+Z in Explorer. Treat every delete as permanent.

Quick reference

Goal Command
Delete one file del file.tmp
Confirm each match del /P *.tmp
Quiet (no prompt) del /Q *.log
Force read-only del /F locked.txt
Include subfolders del /S *.tmp
Safe recursive cleanup del /S /P *.tmp
Same as DEL erase notes.tmp

Practice DEL hands-on

Typing the command a few times sticks better than reading about it — especially the safety flags.

CMD Master is a free online interactive learning platform for the command line. Practice Windows CMD, PowerShell, and Bash in a live browser terminal with instant feedback — no install and no VM. Most lessons are free. For a structured Windows path that covers core commands like DEL, start the interactive Windows Command Prompt course.

Tip: run del /? once in a real prompt, then practice del /P on a throwaway *.tmp folder until the confirm loop feels automatic.

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