Issue

• What is the reason for drastic size change of egrep binary in grep-2.20-3.el6.x86_64 ?
• Initially it's size was 108K, whereas now it's 4K ?

[root@localhost ~]# rpm -q grep
grep-2.6.3-6.el6.x86_64
[root@localhost ~]# rpm -ql grep | grep bin
/bin/egrep
/bin/fgrep
/bin/grep
[root@localhost ~]# du -ksh /bin/egrep /bin/fgrep /bin/grep
108K    /bin/egrep
72K /bin/fgrep
112K    /bin/grep

[root@localhost ~]# rpm -q grep
grep-2.20-3.el6.x86_64
[root@localhost ~]# rpm -ql grep | grep bin
/bin/egrep
/bin/fgrep
/bin/grep
[root@localhost ~]# du -ksh /bin/egrep /bin/fgrep /bin/grep
4.0K    /bin/egrep
4.0K    /bin/fgrep
160K    /bin/grep