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#>wget https://ftp.gnu.org/gnu/glibc/glibc-2.17.tar.gz
#>wget https://ftp.gnu.org/gnu/glibc/glibc-2.17.tar.gz –no-check-certificate
#>pwd
#>ls
#>ll
#>tar zxvf glibc-2.17.tar.gz
#>ll
#>/bin/rm -rf glibc-2.14
#>ll
#>cd glibc-2.17
#>mkdir build
#>cd build/
#>…/configure –prefix=/opt/glibc-2.17
#>echo $LD_LIBRARY_PATH
#>export LD_LIBRARY_PATH
#>echo $LD_LIBRARY_PATH
#>echo $LD_LIBRARY_PATH=
#>export LD_LIBRARY_PATH=
#>echo $LD_LIBRARY_PATH
#>…/configure –prefix=/opt/glibc-2.17
#>ls
#>make -j12
#>make install
#>pwd
#>cd /opt/glibc-2.17/lib/libc-2.17.so
#>export LD_PRELOAD=”/opt/glibc-2.17/lib/libc-2.17.so”
#>echo $LD_PRELOAD
#>mv /lib64/libc.so.6 /lib64/libc.so.6.bak
#>ln -s /opt/glibc-2.17/lib/libc-2.17.so /lib64/libc.so.6
#>cd /lib
#>ll libc.so.6
#>pwd
#>ll
#>ls -rlth
#>’
#>ls
#>LD_PRELOAD=/lib64/libc-2.12.so ln -sf /lib64/libc-2.12.so /lib64/libc.so.6
#>ls
#>export LD_PRELOAD=/lib64/libc-2.12.so
#>echo $LD_PRELOAD
#>l
#>ls
#>ll libc.so.6
#>mv /lib64/libc.so.6 /lib64/libc.so.6.bak
#>ll libc*
#>ls
#>mv libc.so.6 libc.so.6.bak
#>ln -s /opt/glibc-2.17/lib/libc-2.17.so libc.so.6
#>ll libc.so.6
#>strings /lib64/libc.so.6 | grep GLIBC
#>pwd
#>ll
#>ll libc*
#>ll libc.so.6
#>/bin/rm libc.so.6
#>ln -s libc.so.6.bak libc.so.6
#>ll libc.so.6
#>/bin/rm libc.so.6
#>mv libc.so.6.bak libc.so.6
#>ll libc.so.6
#>pwd
#>cd /lib64/
#>ll libc*
#>ln -s /opt/glibc-2.17/lib/libc-2.17.so /lib64/libc.so.6
#>ll libc.so.6
#>strings /lib64/libc.so.6 | grep GLIBC