cheat-sheet

My cheat sheet for commands I have trouble remembering.

Find and copy files by extension recursively

find . -name '*.pdf' -exec cp -r {} /home/jpickard/pdffiles \;

7-Zip compression (p7zip)

7z a archivename.7z thingtobearchived

Recursively unzip

while [ "`find . -type f -name '*.zip' | wc -l`" -gt 0 ]; do find -type f -name "*.zip" -exec unzip -- '{}' \; -exec rm -- '{}' \;; done

Merge PDF files

Ghostscript

gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=mergedfile.pdf -dBATCH file1.pdf file2.pdf

ImageMagick

convert file1.pdf[0-1] file2.pdf mergedfile.pdf

UFW

Examples

ufw status numbered
ufw delete 2
ufw allow from 192.168.1.10 to any port 22 proto tcp
ufw allow in on tailscal0 to interfaceip port 22 from otherdeviceip
ufw reset