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[root@localhost /]# dump -0u -f /tmp/bootdump /boot
-bash: dump: command not found

[root@localhost Documents]# man dump
No manual entry for dump

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[root@localhost /]# locate dump
/bin/dumpkeys
/etc/kdump-adv-conf
/etc/kdump.conf
/etc/kdump-adv-conf/kdump_initscripts
/etc/kdump-adv-conf/kdump_sample_manifests
/etc/kdump-adv-conf/kdump_initscripts/init
/etc/kdump-adv-conf/kdump_initscripts/kdumpinit.rootfs
/etc/kdump-adv-conf/kdump_sample_manifests/manifest.localrootfs
/etc/rc.d/init.d/kdump
/etc/rc.d/rc0.d/K80kdump
/etc/rc.d/rc1.d/K80kdump
/etc/rc.d/rc2.d/K80kdump
/etc/rc.d/rc3.d/S20kdump
/etc/rc.d/rc4.d/S20kdump
/etc/rc.d/rc5.d/S20kdump
/etc/rc.d/rc6.d/K80kdump
/etc/selinux/targeted/modules/active/modules/kdump.pp
/etc/selinux/targeted/modules/active/modules/kdumpgui.pp
/etc/sysconfig/kdump
/sbin/dumpe2fs
/sbin/kdump
/sbin/lvmdump
/sbin/mkdumprd
/sbin/regdbdump
/usr/bin/abrt-dump-oops
/usr/bin/aseqdump
/usr/bin/db_dump
/usr/bin/db_dump185
/usr/bin/devdump
/usr/bin/dumphint
/usr/bin/dumpiso
/usr/bin/eu-objdump
/usr/bin/hexdump
/usr/bin/isodump
/usr/bin/objdump
/usr/bin/tiffdump
/usr/bin/usbhid-dump
/usr/bin/utmpdump
/usr/bin/yum-debug-dump
/usr/lib/python2.6/site-packages/meh/dump.py
/usr/lib/python2.6/site-packages/meh/dump.pyc
/usr/lib/python2.6/site-packages/meh/dump.pyo
/usr/lib/python2.6/site-packages/sos/plugins/kdump.py
/usr/lib/python2.6/site-packages/sos/plugins/kdump.pyc
/usr/lib/python2.6/site-packages/sos/plugins/kdump.pyo
/usr/lib/python2.6/site-packages/sos/plugins/netdump.py
/usr/lib/python2.6/site-packages/sos/plugins/netdump.pyc
/usr/lib/python2.6/site-packages/sos/plugins/netdump.pyo
/usr/lib/rpm/rpmdb_dump
/usr/lib64/httpd/modules/mod_dumpio.so
/usr/lib64/nss/unsupported-tools/derdump
/usr/lib64/python2.6/sqlite3/dump.py
/usr/lib64/python2.6/sqlite3/dump.pyc
/usr/lib64/python2.6/sqlite3/dump.pyo
/usr/sbin/dump-acct
/usr/sbin/dump-utmp
/usr/sbin/makedumpfile
/usr/sbin/pppdump
/usr/sbin/skdump
/usr/sbin/tcpdump
/usr/sbin/zdump
/usr/share/kdump
/usr/share/doc/tcpdump-4.0.0
/usr/share/doc/db4-utils-4.7.25/utility/db_dump.html
/usr/share/doc/kexec-tools-2.0.0/kexec-kdump-howto.txt
/usr/share/doc/tcpdump-4.0.0/CHANGES
/usr/share/doc/tcpdump-4.0.0/CREDITS
/usr/share/doc/tcpdump-4.0.0/LICENSE
/usr/share/doc/tcpdump-4.0.0/README
/usr/share/dracut/modules.d/99kdumpbase
/usr/share/dracut/modules.d/99kdumpbase/check
/usr/share/dracut/modules.d/99kdumpbase/install
/usr/share/firstboot/modules/firstboot_kdump.py
/usr/share/ghostscript/8.70/lib/dumphint.ps
/usr/share/kdump/firstboot_kdump.py
/usr/share/kdump/firstboot_kdump.pyc
/usr/share/kdump/firstboot_kdump.pyo
/usr/share/man/man1/aseqdump.1.gz
/usr/share/man/man1/devdump.1.gz
/usr/share/man/man1/dumpiso.1.gz
/usr/share/man/man1/dumpkeys.1.gz
/usr/share/man/man1/hexdump.1.gz
/usr/share/man/man1/isodump.1.gz
/usr/share/man/man1/objdump.1.gz
/usr/share/man/man1/tiffdump.1.gz
/usr/share/man/man1/yum-debug-dump.1.gz
/usr/share/man/man5/isodump.5.gz
/usr/share/man/man5/kdump.conf.5.gz
/usr/share/man/man8/dump-acct.8.gz
/usr/share/man/man8/dump-utmp.8.gz
/usr/share/man/man8/dumpe2fs.8.gz
/usr/share/man/man8/kdump_selinux.8.gz
/usr/share/man/man8/kdumpgui_selinux.8.gz
/usr/share/man/man8/lvmdump.8.gz
/usr/share/man/man8/makedumpfile.8.gz
/usr/share/man/man8/mkdumprd.8.gz
/usr/share/man/man8/pppdump.8.gz
/usr/share/man/man8/regdbdump.8.gz
/usr/share/man/man8/tcpdump.8.gz
/usr/share/man/man8/zdump.8.gz
/usr/share/mime/image/x-xwindowdump.xml
/usr/share/perl5/dumpvar.pl
/usr/share/selinux/devel/include/apps/kdumpgui.if
/usr/share/selinux/devel/include/system/kdump.if
/usr/share/selinux/targeted/kdump.pp.bz2
/usr/share/selinux/targeted/kdumpgui.pp.bz2
/usr/src/kernels/2.6.32-279.el6.x86_64/include/config/core/dump
/usr/src/kernels/2.6.32-279.el6.x86_64/include/config/core/dump/default
/usr/src/kernels/2.6.32-279.el6.x86_64/include/config/core/dump/default/elf
/usr/src/kernels/2.6.32-279.el6.x86_64/include/config/core/dump/default/elf/headers.h
/usr/src/kernels/2.6.32-279.el6.x86_64/include/config/crash/dump.h
/usr/src/kernels/2.6.32-279.el6.x86_64/include/linux/coredump.h
/usr/src/kernels/2.6.32-279.el6.x86_64/include/linux/crash_dump.h
/usr/src/kernels/2.6.32-279.el6.x86_64/include/linux/kmsg_dump.h
/var/lib/yum/yumdb/t/6147ab0ce83411c14e8230d6a802c9d0da45c589-tcpdump-4.0.0-3.20090921gitdf3cb4.2.el6-x86_64
/var/lib/yum/yumdb/t/6147ab0ce83411c14e8230d6a802c9d0da45c589-tcpdump-4.0.0-3.20090921gitdf3cb4.2.el6-x86_64/checksum_data
/var/lib/yum/yumdb/t/6147ab0ce83411c14e8230d6a802c9d0da45c589-tcpdump-4.0.0-3.20090921gitdf3cb4.2.el6-x86_64/checksum_type
/var/lib/yum/yumdb/t/6147ab0ce83411c14e8230d6a802c9d0da45c589-tcpdump-4.0.0-3.20090921gitdf3cb4.2.el6-x86_64/from_repo
/var/lib/yum/yumdb/t/6147ab0ce83411c14e8230d6a802c9d0da45c589-tcpdump-4.0.0-3.20090921gitdf3cb4.2.el6-x86_64/from_repo_revision
/var/lib/yum/yumdb/t/6147ab0ce83411c14e8230d6a802c9d0da45c589-tcpdump-4.0.0-3.20090921gitdf3cb4.2.el6-x86_64/from_repo_timestamp
/var/lib/yum/yumdb/t/6147ab0ce83411c14e8230d6a802c9d0da45c589-tcpdump-4.0.0-3.20090921gitdf3cb4.2.el6-x86_64/installed_by
/var/lib/yum/yumdb/t/6147ab0ce83411c14e8230d6a802c9d0da45c589-tcpdump-4.0.0-3.20090921gitdf3cb4.2.el6-x86_64/reason
/var/lib/yum/yumdb/t/6147ab0ce83411c14e8230d6a802c9d0da45c589-tcpdump-4.0.0-3.20090921gitdf3cb4.2.el6-x86_64/releasever