Linux: Tipps and Tricks in console

linux_tipps_and_tricks.sh

# Parse json file in bash:

mocha -R json | grep failures -m 1 | awk '{ print $2 }'

#export als json
#-------------| get only 1. line
#----------------------------------| get only second part of string


# PATH
/etc/environments


# Convert all PNG files in JPG mogrify is part of the ImageMagick suite of tools for image processing
mogrify -format jpg *.png


# Create thumbnails
mkdir thumbs
mogrify -format gif -path thumbs -thumbnail 100x100 *.jpg

# Create PDF file from images (for example from png files)
convert *.png myfile.pdf
convert 1.png 2.png myfile.pdf