Example related — Recovering typical deleted file in GNU/Linux

$which glxgears /usr/bin/glxgears $rm /usr/bin/glxgears rm: remove write-protected regular file ‘/usr/bin/glxgears’? y rm: cannot remove ‘/usr/bin/glxgears’: Permission denied $sudo rm /usr/bin/glxgears [sudo] password for jeffrin: $ps aux | grep glxgears jeffrin 2469 4.4 0.6 157656 20888 pts/0 Sl+ 22:43 0:07 glxgears jeffrin 2515 0.0 0.0 12656 1560 pts/1 S+ 22:46 0:00 grep glxgears $sudo cat …

/proc/meminfo related

# cat /proc/meminfo MemTotal: 1995608 kB MemFree: 77804 kB Buffers: 226640 kB Cached: 306916 kB SwapCached: 1256 kB Active: 817952 kB Inactive: 458696 kB Active(anon): 553568 kB Inactive(anon): 193212 kB Active(file): 264384 kB Inactive(file): 2100484 kB Unevictable: 4696 kB Mlocked: 4696 kB SwapTotal: 5843964 kB SwapFree: 5838604 kB Dirty: 752 kB Writeback: 0 kB AnonPages: …