Progress Logging of Transaction Uploads

Progress logging of transaction uploads to stderr can be enabled by setting the ARDRIVE_PROGRESS_LOG environment variable to 1:

Uploading file transaction 1 of total 2 transactions...
Transaction _GKQasQX194a364Hph8Oe-oku1AdfHwxWOw9_JC1yjc Upload Progress: 0%
Transaction _GKQasQX194a364Hph8Oe-oku1AdfHwxWOw9_JC1yjc Upload Progress: 35%
Transaction _GKQasQX194a364Hph8Oe-oku1AdfHwxWOw9_JC1yjc Upload Progress: 66%
Transaction _GKQasQX194a364Hph8Oe-oku1AdfHwxWOw9_JC1yjc Upload Progress: 100%
Uploading file transaction 2 of total 2 transactions...
Transaction nA1stCdTkuf290k0qsqvmJ78isEC0bwgrAi3D8Cl1LU Upload Progress: 0%
Transaction nA1stCdTkuf290k0qsqvmJ78isEC0bwgrAi3D8Cl1LU Upload Progress: 13%
Transaction nA1stCdTkuf290k0qsqvmJ78isEC0bwgrAi3D8Cl1LU Upload Progress: 28%
Transaction nA1stCdTkuf290k0qsqvmJ78isEC0bwgrAi3D8Cl1LU Upload Progress: 42%
Transaction nA1stCdTkuf290k0qsqvmJ78isEC0bwgrAi3D8Cl1LU Upload Progress: 60%
Transaction nA1stCdTkuf290k0qsqvmJ78isEC0bwgrAi3D8Cl1LU Upload Progress: 76%
Transaction nA1stCdTkuf290k0qsqvmJ78isEC0bwgrAi3D8Cl1LU Upload Progress: 91%
Transaction nA1stCdTkuf290k0qsqvmJ78isEC0bwgrAi3D8Cl1LU Upload Progress: 100%

How is this guide?