Answer / sureshkumar

/var/log/message

Answer / ravikumar

echo $?

Answer / pankaj pal

To check the command successfully executed or not we can
run command echo $?
if the result is 0 meaning successful, else will be had a
problem.
For error messages you can check /var/log/
or /var/log/messages

Answer / aravinth

you can try
cat /etc/var/log

rpm package installation error in centos 6.4 [root@localhost packages6.4]# rpm -ivh nfs-utils-1.2.3-36.el6.i686.rpm warning: nfs-utils-1.2.3-36.el6.i686.rpm: Header V3 RSA/SHA1 Signature, key ID c105b9de: NOKEY error: Failed dependencies: keyutils >= 1.4-4 is needed by nfs-utils-1:1.2.3-36.el6.i686 libevent is needed by nfs-utils-1:1.2.3-36.el6.i686 libevent-1.4.so.2 is needed by nfs-utils-1:1.2.3-36.el6.i686 libgssglue is needed by nfs-utils-1:1.2.3-36.el6.i686 libgssglue.so.1 is needed by nfs-utils-1:1.2.3-36.el6.i686 libgssglue.so.1(libgssapi_CITI_2) is needed by nfs-utils-1:1.2.3-36.el6.i686 libnfsidmap.so.0 is needed by nfs-utils-1:1.2.3-36.el6.i686 libtirpc is needed by nfs-utils-1:1.2.3-36.el6.i686 libtirpc.so.1 is needed by nfs-utils-1:1.2.3-36.el6.i686 nfs-utils-lib >= 1.1.0-3 is needed by nfs-utils-1:1.2.3-36.el6.i686 rpcbind is needed by nfs-utils-1:1.2.3-36.el6.i686

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