#-> /opt/ncsbin/lnxutils/nfs_stale_handle_check.sh
df: ‘/app/tdrive’: Stale file handle
df: ‘/app/tdrive’: Stale file handle

#-> bash -x /opt/ncsbin/lnxutils/umount_stale_nfs_fs.sh
+ Stale_nfs_script=/opt/ncsbin/lnxutils/nfs_stale_handle_check.sh
+ PATH=/usr/xpg4/bin:/usr/bin:/usr/ucb:/bin:/usr/local/bin:/usr/sbin:/sbin:/opt/ncsbin/lnxutils:./bin
+ PROGRAM=/opt/ncsbin/lnxutils/umount_stale_nfs_fs.sh
++ basename /opt/ncsbin/lnxutils/umount_stale_nfs_fs.sh
+ PRGNAME=umount_stale_nfs_fs.sh
+ DEBUG=
+ mailusr=
++ date +%Y%m%d-%H:%M
+ LOGFILE=/var/tmp/umount_stale_nfs_fs-20200321-09:42.log
+ _whoami
++ whoami
+ '[' root '!=' root ']'
+ getopts :m:dhv opt
+ tee /var/tmp/umount_stale_nfs_fs-20200321-09:42.log
+ case $(uname -s) in
++ uname -s
+ umount_stale_nfs_on_linux
+ /opt/ncsbin/lnxutils/nfs_stale_handle_check.sh
+ read LINE
df: ‘/app/tdrive’: Stale file handle
df: ‘/app/tdrive’: Stale file handle
+ [[ ! -z '' ]]

Error: Package: lnxutils-2.0-1.el7.x86_64 (installed)
           Requires: /usr/bin/ksh
           Removing: ksh-20120801-22.el7_1.2.x86_64 (@RHEL7.2-base-x86_64)
               Not found
           Updated By: ksh-20120801-22.el7_1.3.x86_64 (RHEL7.2-GPB-Nov-2016)
               Not found
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest