How to delete unwanted files in Raspberry Pi command?

 Here’s a safe, no-nonsense cheat-sheet for deleting files from the Raspberry Pi command line (Raspberry Pi OS / Linux).

0) Quick safety checklist

• Double-check the path: pwd then ls -al (shows hidden files too).

• Tab-complete names; quote paths with spaces: "My file.txt".

• Prefer interactive/confirming deletes at first: rm -i / rm -I.

• Avoid sudo rm -rf unless you’re 100% sure.

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1) Delete single files

# basic
rm file.txt

# confirm before each delete
rm -i file.txt

# verbose (show what’s removed)
rm -v file.txt

# file with spaces or leading dash
rm -- "My file.txt"
rm -- --weird-name

2) Delete many by pattern (glob)

# delete all .log in current folder
rm *.log

# confirm each
rm -i *.log

# include hidden dotfiles
rm .*.tmp 2>/dev/null

3) Delete directories

# remove an empty dir
rmdir mydir

# remove a non-empty dir (careful!)
rm -r mydir

# safer: prompt once if >3 files
rm -rI mydir

# show each removal
rm -rv mydir

4) Delete by size, age, or name (find)

These are powerful—and safer—because you can preview first.

# PREVIEW large files (>100 MB) under current dir
find . -type f -size +100M -print

# DELETE them after you’re sure
find . -type f -size +100M -delete

# Delete *.log older than 7 days under /var/log (needs sudo)
sudo find /var/log -type f -name "*.log" -mtime +7 -delete

# Delete empty directories
find . -type d -empty -delete

# Delete node_modules folders under current tree (preview, then delete)
find . -type d -name "node_modules" -prune -print
find . -type d -name "node_modules" -prune -exec rm -rf {} +

Tip: swap -delete/-exec … rm with -print first to see what would be removed.

5) Free up space (common places)

# Show what’s big in current dir
du -sh * .[^.]* 2>/dev/null | sort -h

# System package cache
sudo apt clean           # remove all cached .deb files
sudo apt autoremove      # remove unused dependencies

# systemd journal (if used)
journalctl --disk-usage
sudo journalctl --vacuum-size=100M     # keep only 100 MB of logs
# or: sudo journalctl --vacuum-time=7d

# Trash for your user (GUI deletions live here)
du -sh ~/.local/share/Trash 2>/dev/null
rm -r ~/.local/share/Trash/* 2>/dev/null

6) “Send to Trash” from terminal (reversible)

If you prefer a recycle-bin style workflow:

sudo apt update
sudo apt install trash-cli

# move to trash instead of permanent delete
trash-put file.txt  mydir/

# list / restore / empty
trash-list
trash-restore
trash-empty         # empty everything
trash-empty 7       # empty items older than 7 days

7) Permissions & stubborn files

# if "Permission denied", you might need sudo
sudo rm file.txt

# if write-protected, force with -f (use sparingly)
rm -f file.txt

# if a process is using the file
lsof | grep filename
# stop the process, then delete

8) Nice extras for finding big stuff

# ncdu = interactive disk usage browser (highly recommended)
sudo apt install ncdu
ncdu /

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Common gotchas to avoid

• Don’t run destructive commands as root in /, /boot, /usr, /etc, /lib, /var unless you know exactly what you’re doing.

• rm -rf .* in your home directory can nuke .. (parent) on some shells—don’t do that.

• Always preview with find … -print or ls before deleting.