Quickly surveying free disk space on UNIX and Linux

Keeping an eye on disk space on a Solaris server is important for me at work while keeping the same top level overview is good for my use of Linux at home too. Luckily, there’s a simple command that delivers the goods:

df -h 2>/dev/null

The "df -h" piece is what delivers the statistics while the "2>/dev/null" rids the terminal of any error messages; ones stating that access has been denied are common and can cloud the picture.