$ pear help size
pear size [options] [PACKAGE ...]
Display information on how much space an installed PEAR package requires.
Options:
  -a, --all
        display information for all installed packages
  -A, --allchannels
        list packages from all channels, not just the default one
  -c CHANNEL, --channel=CHANNEL
        specify which channel
  -C, --csv
        output results in CSV format (sizes are measured in bytes).
  -h, --human-readable
        print sizes in human readable format (for example: 492 B 1KB 7MB)
  -H, --si
        likewise, but use powers of 1000 not 1024
  -t TYPES, --type=TYPES
        specify what type of files are required for the report
  -s, --summarise
        display channel summary view
  -S, --fsort
        sort by file size
  -v, --verbose
        display more detailed information
  -V, --version
        output version information and exit
  -X, --xml
        output results in XML format
  -0, --killzero
        do not output zero values in verbose mode