Create folder with case-insensitive file name on Linux

Install ciopfs

1. Get source code from https://github.com/martanne/ciopfs.

2. Install dependencies.
   Fedora:

   $ sudo dnf install make gcc fuse-devel glib2-devel libattr-devel
   

   Debian:

   $ sudo apt install make gcc libfuse-dev libglib2.0-dev libattr1-dev
   

3. Build and install.

   $ make && make install
   

Create folder that files inside it are case-insensitive

1. Create two folders: one for contain real data (case-sensitive), one is mount point (case-insensitive).

   $ mkdir .data-real data
   

2. Mount .data-real to data with ciopfs.

   $ sudo ciopfs .data-real data
   

Now just use folder data as a case-insensitive folder.

Auto-mount on boot

Add mount entry to /etc/fstab.

/path/to/.data-real	/path/to/data	ciopfs	allow_other,default_permissions,use_ino,attr_timeout=0	0	0

References

https://www.brain-dump.org/projects/ciopfs/