Delete all files except one on linux

Glob

• shopt -s extglob
• rm -v !("filename")
• rm -v !("filename1"|"filename2")
• rm -v !(*.zip|*.odt)
• shopt -u extglob

Find

• find /directory/ -type f -not -name 'PATTERN' -delete
• find /directory/ -type f -not -name 'PATTERN' -print0 | xargs -0 -I {} rm {}
• find /directory/ -type f -not -name 'PATTERN' -print0 | xargs -0 -I {} rm [options] {}
• find . -type f -not \(-name '*gz' -or -name '*odt' -or -name '*.jpg' \) -delete

Glob ignore

• cd test
• GLOBIGNORE=*.odt:*.iso:*.txt
• rm -v *
• unset GLOBIGNORE

(source)

Batch deleting files in Windows

List all the jpg files:

dir /s *.jpg /b > jpgs.txt

Delete all the jpg files:

del /s /q /f /a *.jpg

Delete a file starting with a dash

You accidentally created a file called "-.log"

To delete it, instead of
rm -.log
try
rm ./-.log