title: df nice output format in emails
body: <p>I sent emails with space usage information.</p>
  
  <p><code>df -Ph | mailx -s "disk usage" mybox@company.com</code></p>
  
  <p>But when I read an email it looks like this:</p>
  
  <pre><code>Filesystem            Size  Used Avail Use% Mounted on
  /dev/sda3          2.0G  372M  1.6G  20% /
  tmpfs           32G   12G   20G  38% /dev/shm
  /dev/sda1         248M   28M  208M  12% /boot
  /dev/mapper/sys-home  4.0G  308M  3.6G   8% /home
  /dev/mapper/sys-tmp   2.0G  3.7M  1.9G   1% /tmp
  /dev/mapper/sys-rcv   247G  130G  114G  54% /flash_recovery_area
  /dev/mapper/sys-usr   4.0G  2.6G  1.4G  66% /usr
  /dev/mapper/sys-var   2.0G  291M  1.6G  16% /var
  /dev/mapper/orcl-u01  493G  331G  162G  68% /u01
  /dev/mapper/orcl-ora  640G  588G   53G  92% /oradata
  /dev/sdc1       916G  602G  268G  70% /mnt/backup
  /dev/sdb2       516G  241G  250G  50% /oradata/ods
  </code></pre>
  
  <p>Any ideas, how can I preformat it order to align the column in the table?</p>
  
  <p>I want it prettily formatted:</p>
  
  <pre><code>Filesystem             Size  Used Avail Use% Mounted on
  /dev/sda3               2.0G  372M  1.6G  20% /
  tmpfs                    32G   12G   20G  38% /dev/shm
  /dev/sda1               248M   28M  208M  12% /boot
  /dev/mapper/sys-home    4.0G  308M  3.6G   8% /home
  /dev/mapper/sys-tmp     2.0G  3.7M  1.9G   1% /tmp
  /dev/mapper/sys-rcv     247G  130G  114G  54% /flash_recovery_area
  /dev/mapper/sys-usr     4.0G  2.6G  1.4G  66% /usr
  /dev/mapper/sys-var     2.0G  291M  1.6G  16% /var
  /dev/mapper/orcl-u01    493G  331G  162G  68% /u01
  /dev/mapper/orcl-ora    640G  588G   53G  92% /oradata
  /dev/sdc1               916G  602G  268G  70% /mnt/backup
  /dev/sdb2               516G  241G  250G  50% /oradata/ods
  </code></pre>