Miscellaneous short shell utilities I use frequently

Inject or steal jobserver tokens from GNU make. Useful for when you want to increment or decrement the -j setting on a long-running parallel make.

Expect make to emit warnings such as the following after using this:

make: INTERNAL: Exiting with 7 jobserver tokens available; should be 5!

Copy or move a file, and also move the vim undofile. Assumes all undofiles are kept in ~/.vim/undo. Currently, it only moves one file at a time, it requires absolute paths, and it requires the second argument to be the filename and not just the target directory. It won't do the right thing if you only specify the target directory.

BUG: Should be more robust, and should at least complain instead of doing the wrong thing.

Like vim-cp and vim-mv, but also renames it in git.

Compare two files, and ask if you want to delete the first if the two are identical.

Compare two files, and ask if you want to replace the first with a symlink to the second if the two are identical.

Returns success if two files are the same inode, and otherwise returns failure.

BUG: Doesn't make sure the files are actually on the same device.

For each specified swap device, or, if none are specified on the command line, for each swap device in /proc/swaps, calls swapoff and then swapon. Useful for loading swapped-out pages back into RAM after recovering from a low-memory condition.

Filter a list of filenames, removing files with content identical to a file already seen.

Uses newline as delimiter. Will choke on filenames containing newlines.