scroll code for gif

scroll.sh

# from https://superuser.com/questions/472476/is-there-an-automatically-scrolling-time-delayed-unix-pager-command
function scroll
{
    while read -r ; do echo "$REPLY" ; sleep ${1:-0.5} ; done
}

# assuming you have source code src directory
find src -type f -name "*c" -exec cat {} \; | scroll 0.2

# use the following vimpager, asciinema, asciicast2gif
# steps
#   1. git clone git@github-xbalaji:xbalaji/vimpager.git ~/dev/github-xbalaji/vimpager
#   2. sudo -H pip3 install asciinema
#   3. docker pull asciinema/asciicast2gif
#   4. assuming your source is in ~/dev/github-xbalaji/animation
#   5. cd ~/dev/github-xbalaji/animation
#   6. find . -type d  -path "*git" -prune -o -type f -print <-- check the source files for animation
#   7. now add some spaces in the beginning of the line for each of the file
#   8. find . -type d  -path "*git" -prune -o -type f -exec sed -i -e 's/^/            /' {} \;
#   9. also add some empty lines at the top and bottom of the each file
#  10. for lx in 1 2 3 .. 10; do find . -type d  -path "*git" -prune -o -type f -exec sed -i '1s/^/                      \n/' {} \; ; done
#  11. also to end of the file
#  12. for lx in 1 2 3 .. 10; do find . -type d  -path "*git" -prune -o -type f -exec sed -i -e "\$a\                       " {} \; ; done
#  13. start the asciinema
#  14. asciinema rec ~/xb-banner.cast -q -t 'xbalaji banner' -c 'find . -type d  -path "*git" -prune -o -type f  -exec ~/dev/github-xbalaji/vimpager/vimcat -t 0.5 {} \;'
#  15. mv ~/xb-banner.cast ./xb-banner.cast
#  16. convert to gif using asciicast2gif
#  17. docker run --rm -v $PWD:/data asciinema/asciicast2gif ./xb-banner.cast ./xb-banner.gif