Here are the scripts I've copied to many machines. I'm collecting some more from the boxes I administrates. Most scripts were written for specific purposes. After I clean them up and add enough comments, I put them here. Usages are described in each file. Here is an index: backup manages incremental backups with tar. funcs includes functions which may be useful. packconf helps create a bash script which is an installer for configuration files which are taken from the current system. sandbox/ turns a Debian into sandbox mode, so that the root filesystem could be read-only. update-env can be used with tmux to update environment variables after each attaching.