$ cat /proc/self/maps > 1
$ cat /proc/self/maps > 2
$ diff 1 2
4,18c4,18
< 00ebe000-00edf000 rw-p 00000000 00:00 0               [heap]
< 7f4b0954e000-7f4b097f2000 r--p 00000000 08:01 786578  /usr/lib/locale/locale-archive
< 7f4b097f2000-7f4b0996c000 r-xp 00000000 08:01 133953  /lib/libc-2.12.1.so
< 7f4b0996c000-7f4b09b6b000 ---p 0017a000 08:01 133953  /lib/libc-2.12.1.so
< 7f4b09b6b000-7f4b09b6f000 r--p 00179000 08:01 133953  /lib/libc-2.12.1.so
< 7f4b09b6f000-7f4b09b70000 rw-p 0017d000 08:01 133953  /lib/libc-2.12.1.so
< 7f4b09b70000-7f4b09b75000 rw-p 00000000 00:00 0 
< 7f4b09b75000-7f4b09b95000 r-xp 00000000 08:01 133961  /lib/ld-2.12.1.so
< 7f4b09d76000-7f4b09d79000 rw-p 00000000 00:00 0 
< 7f4b09d93000-7f4b09d95000 rw-p 00000000 00:00 0 
< 7f4b09d95000-7f4b09d96000 r--p 00020000 08:01 133961  /lib/ld-2.12.1.so
< 7f4b09d96000-7f4b09d97000 rw-p 00021000 08:01 133961  /lib/ld-2.12.1.so
< 7f4b09d97000-7f4b09d98000 rw-p 00000000 00:00 0 
< 7fffbfc4c000-7fffbfc6d000 rw-p 00000000 00:00 0       [stack]
< 7fffbfd17000-7fffbfd18000 r-xp 00000000 00:00 0       [vdso]
---
> 012cb000-012ec000 rw-p 00000000 00:00 0               [heap]
> 7f6c9170e000-7f6c919b2000 r--p 00000000 08:01 786578  /usr/lib/locale/locale-archive
> 7f6c919b2000-7f6c91b2c000 r-xp 00000000 08:01 133953  /lib/libc-2.12.1.so
> 7f6c91b2c000-7f6c91d2b000 ---p 0017a000 08:01 133953  /lib/libc-2.12.1.so
> 7f6c91d2b000-7f6c91d2f000 r--p 00179000 08:01 133953  /lib/libc-2.12.1.so
> 7f6c91d2f000-7f6c91d30000 rw-p 0017d000 08:01 133953  /lib/libc-2.12.1.so
> 7f6c91d30000-7f6c91d35000 rw-p 00000000 00:00 0 
> 7f6c91d35000-7f6c91d55000 r-xp 00000000 08:01 133961  /lib/ld-2.12.1.so
> 7f6c91f36000-7f6c91f39000 rw-p 00000000 00:00 0 
> 7f6c91f53000-7f6c91f55000 rw-p 00000000 00:00 0 
> 7f6c91f55000-7f6c91f56000 r--p 00020000 08:01 133961  /lib/ld-2.12.1.so
> 7f6c91f56000-7f6c91f57000 rw-p 00021000 08:01 133961  /lib/ld-2.12.1.so
> 7f6c91f57000-7f6c91f58000 rw-p 00000000 00:00 0 
> 7fffd43fb000-7fffd441c000 rw-p 00000000 00:00 0       [stack]
> 7fffd4501000-7fffd4502000 r-xp 00000000 00:00 0       [vdso]
$