1、centos6.9安装xampp（xampp-linux-x64-7.0.21-0-installer.run）后启动的时候，报错：
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/bin/bash: error while loading shared libraries: libdl.so.2: cannot open shared object file: No such file or directory
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
basename: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
start
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
startapache
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
startmysql
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
startftp
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
stop
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
stopapache
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
stopmysql
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
stopftp
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
reload
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
reloadapache
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
reloadmysql
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
reloadftp
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
restart
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
security
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
enablessl
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
disablessl
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
backup
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
oci8
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
panel
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
2、有人说少了glibc包，32/64的都安装了，然并卵
[admin@19-56 lampp]$ yum list glibc
Loaded plugins: fastestmirror
Determining fastest mirrors
base | 3.7 kB 00:00
epel | 4.3 kB 00:00
extras | 3.4 kB 00:00
jenkins | 2.9 kB 00:00
jenkins/primary_db | 99 kB 00:23
updates | 3.4 kB 00:00
updates/primary_db | 2.5 MB 00:00
zabbix | 951 B 00:00
zabbix/primary | 8.4 kB 00:00
zabbix 57/57
zabbix-non-supported | 951 B 00:00
Installed Packages
glibc.x86_64 2.12-1.209.el6_9.1 @updates
Available Packages
glibc.i686 2.12-1.209.el6_9.2 updates
glibc.x86_64 2.12-1.209.el6_9.2 updates
[admin@19-56 lampp]$ ./xampp
3、千辛万苦还是找到了答案：
vi /opt/lampp/lampp
找到export LD_ASSUME_KERNEL=2.2.5这一行，
并修改内容为export LD_ASSUME_KERNEL=2.8.0，保存退出就可以解决了。
当然修改为不低于2.6.32的其他值也可以，比如2.6.32
下图是系统的内核版本：2.6.32
4、找了下这个设置的资料解释,原来这个配置是为了旧操作系统的一些兼容性问题
LD_ASSUME_KERNEL
What is LD_ASSUME_KERNEL all about?
The environment variable LD_ASSUME_KERNEL can be set to a value that indicates the kernel OS API version an application is compatible with and is used by the Linux Dynamic Linker/Loader for determining what directory paths to use when loading the Standard C Library (GLIBC or libc.so.6). This is the primary mechanism for dealing with backwards compatibility for applications written for older Linux versions.
Here are the directory paths that are chosen based on the setting of LD_ASSUME_KERNEL:
/lib/libc.so.6
/lib/i686/libc.so.6
/lib/tls/libc.so.6
One of the primary distinguishers of features is the difference between the older LinuxThreads POSIX threading model and the newer threading model NPTL (Native POSIX Thread Library). This can be determined as follows on a Linux BASH command line;
developer@linux:~> /lib/libc.so.6
GNU C Library stable release version 2.3.5 (20050802), by Roland McGrath et al.
Copyright (C) 2005 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Configured for i686-suse-linux.
Compiled by GNU CC version 4.0.2 20050901 (prerelease) (SUSE Linux).
Compiled on a Linux 2.6.12 system on 2005-09-09.
Available extensions:
GNU libio by Per Bothner
crypt add-on version 2.1 by Michael Glad and others
linuxthreads-0.10 by Xavier Leroy
GNU Libidn by Simon Josefsson
NoVersion patch for broken glibc 2.0 binaries
BIND-8.2.3-T5B
libthread_db work sponsored by Alpha Processor Inc
NIS(YP)/NIS+ NSS modules 0.19 by Thorsten Kukuk
Thread-local storage support included.
For bug reporting instructions, please see:
<http://www.gnu.org/software/libc/bugs.html>.
developer@linux:~>
developer@linux:~> /lib/tls/libc.so.6
GNU C Library stable release version 2.3.5 (20050802), by Roland McGrath et al.
Copyright (C) 2005 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Configured for i686-suse-linux.
Compiled by GNU CC version 4.0.2 20050901 (prerelease) (SUSE Linux).
Compiled on a Linux 2.6.12 system on 2005-09-09.
Available extensions:
GNU libio by Per Bothner
crypt add-on version 2.1 by Michael Glad and others
Native POSIX Threads Library by Ulrich Drepper et al
GNU Libidn by Simon Josefsson
NoVersion patch for broken glibc 2.0 binaries
BIND-8.2.3-T5B
NIS(YP)/NIS+ NSS modules 0.19 by Thorsten Kukuk
Thread-local storage support included.
For bug reporting instructions, please see:
<http://www.gnu.org/software/libc/bugs.html>.
developer@linux:~>
(Note: This example is on SLES 9. SLES 10 has deprecated support for Linux Threads and only supports NPTL)
参考：1、http://gaodi2002.blog.51cto.com/5940761/1942697
2、https://www.novell.com/developer/ld_assume_kernel.html