Guide: batch convert SVGs to PNGs

While faithful to the title, this guide also serves as an demonstration of advanced batch execution with find.

find . -regex "./filename\.svg" \
       -exec sh -c \
         'inkscape -w 1200 "$1" -o "${1%.svg}.png"' \
         sh {} \
         \;

The find command collects a list of files matching the -regex pattern executes the command passed between -exec and \; for every match.¹ In this example, the command is sh -c, which itself takes a command as a string and passes it to a sub-shell with the following positional arguments.² The first argument is sh at position $0. This string is used for error messages. The second argument is {} at position $1. This is the placeholder used by the -exec flag to represent our matched file. This is the argument which is passed to the inkscape process. The output width in pixels is set with -w. The destination filename and format is set with -o via parameter expansion.