When I use apt-get update and apt-get upgrade,there are some packages should installed in newest version,like below:
The following packages will be upgraded:
accountsservice apparmor apport apt apt-transport-https apt-utils binutils
cloud-init cpp-4.8 dpkg fuse g++-4.8 gcc-4.8 gcc-4.8-base gdisk gnupg gpgv
grub-common grub-legacy-ec2 grub-pc grub-pc-bin grub2-common initscripts
isc-dhcp-client isc-dhcp-common libaccountsservice0 libapparmor-perl
libapparmor1 libapt-inst1.5 libapt-pkg4.12 libasan0 libatomic1 libbsd0
libcurl3-gnutls libdrm2 libedit2 libfuse2 libgcc-4.8-dev libgd3 libgomp1
libitm1 libjson-c2 libjson0 libnuma1 libpam-systemd libpolkit-agent-1-0
libpolkit-backend-1-0 libpolkit-gobject-1-0 libquadmath0 libstdc++-4.8-dev
libstdc++6 libsystemd-daemon0 libsystemd-login0 libtsan0 libudev1 libxext6
linux-libc-dev ntpdate openssl overlayroot patch policykit-1 ppp
python-urllib3 python3-apport python3-problem-report python3-update-manager
rsyslog systemd-services sysv-rc sysvinit-utils tcpdump tzdata udev
update-manager-core
75 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.
If I didn't know every one of there packages what will happen if there update in newest version.I shouldn't execute this command(apt-get upgrade).
For example:
This php version is before I upgrade
yzxu@ubuntu:/tmp/git-2.1.2$ php --version
PHP 5.6.6-1+deb.sury.org~precise+1 (cli)
Copyright (c) 1997-2015 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2015 Zend Technologies
with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2015, by Zend Technologies
and after I upgrade:
yzxu@ubuntu:/tmp/git-2.1.2$ php --version
PHP 5.6.10-1+deb.sury.org~precise+1 (cli)
Copyright (c) 1997-2015 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2015 Zend Technologies
with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2015, by Zend Technologies
The php version is changed.And if I didn't what what was change in two version,should I upgrade it?Is it will influence product?