process examples
delete some files
add ifconfig examples
del command_examples dir
add archive_compress examples
add system examples
add package examples
change permission from 755 to 644
change permission from 755 to 644
add search examples
add develop examples
add process examples
add network examples
add user examples
add usermod
add ab
add ssh examples
add service manager
mv systemctl to system cata
add perf mon examples