unix-tips

MacOS

pbpaste and pbcopy

Desktop

hide desktop icons and folders

defaults write com.apple.finder CreateDesktop 0
killall Finder # restarting Finder is required

unhide desktop icons and folders

defaults write com.apple.finder CreateDesktop 1
killall Finder # restarting Finder is required

convenient bash alias for this which lets me simply toggle the desktop on and off Here is a gist: https://gist.github.com/berndverst/6f58c0d6aedddb6c06c23e57d...

  toggledesktop () {
    if [[ $(defaults read com.apple.finder CreateDesktop) -eq "0" ]]
    then
        export SHOWDESKTOP=1;
        echo "Unhiding Desktop icons"
    else
        export SHOWDESKTOP=0;
        echo "Hiding Desktop icons"
    fi
    defaults write com.apple.finder CreateDesktop $SHOWDESKTOP
    killall Finder
  }

Misc

`vipe`

Pipe in and out of $EDITOR.

JSON

json_pp

Git

git config --global user.email "email@domain"
git config --global user.name "Name"
git config --global credential.helper store

Tar

UTF-8 filenames and Windows

Add --format=posix when creating the file, e.g.:

tar --format=posix -z -v -c -f ~/json.tgz path/*.json

Pipe list files to tar

find . -maxdepth 1 -iname 'file*' -mtime -1 | sort | tar cvfz tarfile.tgz -T -

CD into directory before tar action, e.g. keep only part of path in tar

tar -cvfz foo.tgz -C /dir/to/cd/into sub/path/with/files

`xargs`

gsutil cp all ipynb files

ls -1 *.ipynb| xargs -I "{}" gsutil cp "{}" "gs://<BUCKET_NAME>/$HOSTNAME/$(date -I)/{}"

Convert Latin1 to UTF-8

iconv -f iso-8859-1 -t utf-8 input_file -o ouput_file

Add line numbers

cat -n

Unicode

Remove BOM from Excel CSVs

sed '1s/^\xEF\xBB\xBF//'

SSL

https://certbot.eff.org/

Video

Make a video from a pic and an mp3

ffmpeg  -loop 1 -i image.png -i song.mp3 -c:v libx264  -pix_fmt yuv420p -t 55 -vf subtitles=subtitles.srt  output_movie.mp4

Docker

install `add-apt-repository`

apt install software-properties-common

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