Notes on Linux Commands

du - estimate file space usage
-s, --summarize
-h, --human-readable
-a, --all write counts for all files, not just directories
du -d 0 -h /home/userA
du -ah --exclude="*.txt" /home/userA

df - report file system disk space usage
df -m
df -ah
Include Certain File System Type -t
Exclude Certain File System Type: -x
df -t ext3
df -x ext3