List of plugins to implement: iostat [-x] [-d] [-N] -zk [-p | <devices>...] <interval> SMART monitoring Battery Volume control /proc/acpi (mute) System tray Eyes Launchers Taskbar (as in rarity) Application menu UPS Blueshift integration Backlight control hdparm Thermal monitoring ESSID and link quality for wireless interfaces News feed syndication Keyboard layout EWMH Meteor Showers Calendars: holidays, birthdays, name days, events /proc/interrupts /proc/net/sockstat /proc/net/sockstat6 /proc/net/wireless /sys/class/net/<nic>/duplex (half, full) /proc/cpuinfo (cpu MHz) /sys/devices/system/cpu/cpu<index>/cpufreq/ (some parts requires root) /proc/sys/fs/dentry-state This file contains information about the status of the directory cache (dcache). The file contains six numbers, nr_dentry, nr_unused, age_limit (age in seconds), want_pages (pages requested by system) and two dummy values. /proc/sys/fs/inode-state This file contains seven numbers: nr_inodes, nr_free_inodes, preshrink, and four dummy values. nr_inodes is the number of inodes the system has allocated. This can be slightly more than inode-max because Linux allocates them one page full at a time. nr_free_inodes represents the number of free inodes. preshrink is nonzero when the nr_inodes > inode-max and the system needs to prune the inode list instead of allocating more. /proc/sys/fs/file-nr This (read-only) file contains three numbers: the number of allocated file handles (i.e., the number of files presently opened); the number of free file handles; and the maximum number of file handles (i.e., the same value as /proc/sys/fs/file-max). If the number of allocated file handles is close to the maximum, you should consider increasing the maximum. Before Linux 2.6, the kernel allocated file handles dynamically, but it didn't free them again. Instead the free file handles were kept in a list for reallocation; the "free file handles" value indicates the size of that list. A large number of free file handles indicates that there was a past peak in the usage of open file handles. Since Linux 2.6, the kernel does deallocate freed file handles, and the "free file handles" value is always zero.