check_disk_space fails

[StrBalu]

Describe the bug
check_disk_space does not detect free disk spaceproperly

To Reproduce
Steps to reproduce the behavior:

1. curl -L https://raw.githubusercontent.com/cryinkfly/Autodesk-Fusion-360-for-Linux/main/files/setup/autodesk_fusion_installer_x86-64.sh -o "autodesk_fusion_installer_x86-64.sh" && chmod +x autodesk_fusion_installer_x86-64.sh && ./autodesk_fusion_installer_x86-64.sh --install --default

2. See error:
   Secure Boot is not enabled.
   The total RAM (Random Access Memory) is greater than 4 GByte (15.41 GByte) and Autodesk Fusion will run more stable later!
   Überprüfung der GPU-Treiber für den Installer ...
   Intel GPU erkannt mit 7890MB VRAM
   Der OpenGL-GPU-Fallback-Treiber wird für die Installation verwendet.
   Main monitor resolution: 1920x1080
   The total VRAM (Video RAM) is greater than 1 GByte (7.89 GByte) and Autodesk Fusion will run more stable later!
   The free disk memory size is: 795G
   ./autodesk_fusion_installer_x86-64.sh: line 630: bc: command not found
   There is not enough disk free memory to continue installing Fusion on your system!
   Make more space in your selected disk or select a different hard drive.
   The installer has been terminated!

Expected behavior
With ~800G free disk space install should succeed

Desktop (please complete the following information):

• Version number of Autodesk Fusion 360 - n/a
• Graphics card model + Graphics card driver (Version number) n/a
• Operating system (OpenSUSE Leap 15.3, Fedora 34, ...) Arch linux (updated as of 2024-11-08)
• Desktop environment (XFCE 4.16, Gnome 40, ...) KDE plasma
• DXVK- or OpenGL-Mode n/a

Additional context
btrfs file system, with the following subvolume structure:
@
@.snapshots
@/var/lib/machines
@/var/lib/portables
@log
@pkg

[roof98]

Same issue here

[Linus045]

Update: I've noticed that it should get auto-installed via the script. I'm unsure why that didn't happen for me. I got the same error as mentioned above and manually installed bc to fix it.

See the end of this line: ./autodesk_fusion_installer_x86-64.sh: line 630: bc: command not found

Installing 'bc' fixed this for me. (Note: bc is a command line calculator for linux)
This dependency however is not mentioned in the README, the README should be updated to include this.