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Unix based OS

ruby , gem

  • uninstall all gem uninstall -aIx
  • gem query -l -n jekyll-theme | xargs gem uninstall uninstall all gems that match "jekyll-theme"
  • gem list | cut -d" " -f1 | xargs gem uninstall -aIx

find

  • find . -type f -mtime +30 -exec echo {} \; find all files older then 30 days
  • find . -type d -depth 1 -mtime -30 -exec echo {} \; find all direcotry newer then 30 days
  • find . -type d -depth 1 -mtime -30 -print | sed -r 's/\.\/(.*)(-[[:digit:]].*)/\1/'
  • find . -type d -depth 1 -mtime -10 -print | sed -r 's/\.\/(.*)(-[[:digit:]].*)/\1/' | xargs gem uninstall 
0 drwxr-xr-x   3 root  wheel   96  1 Jan  2020 bundler-1.17.2eci
0 drwxr-xr-x  15 root  wheel  480  1 Jan  2020 did_you_mean-1.3.0
0 drwxr-xr-x   3 root  wheel   96  1 Jan  2020 irb-1.0.0
0 drwxr-xr-x  10 root  wheel  320  1 Jan  2020 net-telnet-0.2.0
0 drwxr-xr-x   3 root  wheel   96  1 Jan  2020 rdoc-6.1.0
0 drwxr-xr-x  10 root  wheel  320  1 Jan  2020 xmlrpc-0.3.0