backup (and optional delete) repositories

clone-all.sh

#!/bin/bash

USER=; 
PAGE=1;

curl "https://api.github.com/users/$USER/repos?page=$PAGE&per_page=100" |
  grep -e 'git_url*' |
  cut -d \" -f 4 |
  xargs -L1 git clone

delete-all.sh

#!/bin/bash

# WARNING BACKUP FIRST
#                   ===
# ALSO THIS TARGETS ALL
#                   ===
# You need to get a token:
# https://github.com/settings/tokens/new
# with permission: delete_repo

DELETE_TOKEN=;
USER=;
PAGE=1;

curl "https://api.github.com/users/$USER/repos?page=$PAGE&per_page=100" |
  grep -e '^    "url":' |
  cut -d \" -f 4 |
  xargs -L1 curl -X DELETE -H "Authorization: token $DELETE_TOKEN"