Linux 시스템에는 Whatis라는 File 기반의 Meta Data DB가 존재 한다.
Whatis DB를 통해서는 다음과 같은 검색작업이 가능하다.
1. Linux System Whatis DB에 완성 단어를 통해 관련 명령이나 유틸, 데몬등을 질의 검색 (완성단어 검색)
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[root@s-node01 ~]# whatis whatis
whatis (1) - search the whatis database for complete words
[root@s-node01 ~]#
[root@s-node01 ~]# whatis scsi
scsi-target-utils (rpm) - The SCSI target daemon and utility programs
[root@s-node01 ~]# |
2. Linux System 에 설치되어있는 명령이나 유틸 데몬들중 특정 단어가 포함된 조건을 모두 찾고 싶을때 (Like 검색)
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[root@s-node01 ~]#
[root@s-node01 ~]# whatis apropos
apropos (1) - search the whatis database for strings
[root@s-node01 ~]#
[root@s-node01 ~]# apropos scsi
fence_scsi (8) - I/O fencing agent for SCSI persistent reservations
fence_scsi_test (8) - Test for SCSI persistent reservation fencing
iscsi-iname (8) - iSCSI initiator name generation tool
iscsi-initiator-utils (rpm) - iSCSI daemon and utility programs
iscsiadm (8) - open-iscsi administration utility
iscsid (8) - Open-iSCSI daemon
iscsistart (8) - iSCSI boot tool
iscsiuio (8) - iSCSI UserSpace I/O driver
probe::scsi.iocompleted [probe::scsi] (3stap) - SCSI mid-layer running the completion processing for block device I/O requests
probe::scsi.iodispatching [probe::scsi] (3stap) - SCSI mid-layer dispatched low-level SCSI command
probe::scsi.iodone [probe::scsi] (3stap) - SCSI command completed by low level driver and enqueued into the done queue
probe::scsi.ioentry [probe::scsi] (3stap) - Prepares a SCSI mid-layer request
probe::scsi.ioexecute [probe::scsi] (3stap) - Create mid-layer SCSI request and wait for the result
probe::scsi.set_state [probe::scsi] (3stap) - Order SCSI device state change
scsi-target-utils (rpm) - The SCSI target daemon and utility programs
scsi_id (8) - retrieve and generate a unique SCSI identifier
sd (4) - Driver for SCSI Disk Drives
st (4) - SCSI tape device
tapset::scsi (3stap) - systemtap scsi probe points
tgt-admin (8) - Linux SCSI Target Configuration Tool
tgtadm (8) - Linux SCSI Target Administration Utility
[root@s-node01 ~]# |
