sbrk system call in unix

I studied like malloc uses the sbrk system call. But, some one says, the sbrk is
deprecated one. Now a days malloc using the mmap2 system call to allocate
memory. So, Is there any commands like (ls,cat, grep, sed) using the sbrk
system call. For Ex:

mohanraj@ltsp63:~/Development/chap8$ strace -c ls
a.out  files  flush.c  fopen.c      ld.c  lld.c  malloc.c  opendir1.c  t2.c  t3.c  t.c  test.c
% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
  -nan    0.000000           0        12           read
  -nan    0.000000           0         1           write
  -nan    0.000000           0        13           open
  -nan    0.000000           0        16           close
  -nan    0.000000           0         1           execve
  -nan    0.000000           0         1           time
  -nan    0.000000           0         9         8 access
  -nan    0.000000           0         3           brk
  -nan    0.000000           0         3           ioctl
  -nan    0.000000           0         1           readlink
  -nan    0.000000           0         5           munmap
  -nan    0.000000           0         1           uname
  -nan    0.000000           0        11           mprotect
  -nan    0.000000           0         1           _llseek
  -nan    0.000000           0         1           getsid
  -nan    0.000000           0         2           rt_sigaction
  -nan    0.000000           0         1           rt_sigprocmask
  -nan    0.000000           0         1           getcwd
  -nan    0.000000           0         1           getrlimit
  -nan    0.000000           0        28           mmap2
  -nan    0.000000           0         1           stat64
  -nan    0.000000           0        16           fstat64
  -nan    0.000000           0         1           getuid32
  -nan    0.000000           0         2           getdents64
  -nan    0.000000           0         1         1 futex
  -nan    0.000000           0         1           set_thread_area
  -nan    0.000000           0         1           set_tid_address
  -nan    0.000000           0         1           statfs64
  -nan    0.000000           0         1           openat
  -nan    0.000000           0         1           set_robust_list
  -nan    0.000000           0         1           socket
  -nan    0.000000           0         1           connect
  -nan    0.000000           0         1           send
------ ----------- ----------- --------- --------- ----------------
100.00    0.000000                   141         9 total
mohanraj@ltsp63:~/Development/chap8$

The above output shows that the ls command using the above syscall to
execute the output. Likewise any command using the sbrk system call, Is there
any what is that?

Thanks in Advance.


Source: unix

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