Build file system on Linux system, build user, modify user group, reset user password

in the Linux system Build File system, build user, modify user group, reset user password

Experimental background: User and Space

user name: BOSSWLB      Group and satellite group:  BOSSWLB        home directory: /BOSSWLB             shellbash        

Space:    New ( add / enlarge ) 5G unlock password reset abcd1234

1th: Create a new file system

Let's take a look at the existing file system on the system, as shown in:

650) this.width=650; "Src=" https://s3.51cto.com/wyfs02/M02/8E/57/wKiom1i-HarwW8PuAAAUTjymZGM387.png-wh_500x0-wm_ 3-wmp_4-s_4120404609.png "title=" 11.PNG "alt=" Wkiom1i-harww8puaaautjymzgm387.png-wh_50 "/>

the following starts by adding a piece of size 5G new disk, use any of the following commands to scan to a new disk:

1. #echo '---' >/sys/class/scsi_host/host0/scan

2. #rescan-scsi-bus.sh (centos6.7 does not seem to have this command )

3.reboot

650) this.width=650; "Src=" https://s1.51cto.com/wyfs02/M02/8E/55/wKioL1i-Hc-ixeyEAAAGC4u7H_E609.png-wh_500x0-wm_ 3-wmp_4-s_2631097170.png "title=" 222.PNG "alt=" wkiol1i-hc-ixeyeaaagc4u7h_e609.png-wh_50 "/>650) this.width=650;" Src= "https://s4.51cto.com/wyfs02/M00/8E/55/wKioL1i-HhKRgwTAAAAxohUxqxI290.png-wh_500x0-wm_3-wmp_4-s_853069764. PNG "title=" 33.PNG "alt=" Wkiol1i-hhkrgwtaaaaxohuxqxi290.png-wh_50 "/>

this /dev/sdb just add the new plate. We will now start partitioning, formatting and finally creating a new file system, as shown in the following:

before we do this, we need to make sure that the system has lvm2-devel.i686 This bag! Use command:Yum list

|grep LVM see below, no words please install First, command: Yum install–y lvm2-devel.i686 ( I am a 32-bit )

650) this.width=650; "Src=" https://s1.51cto.com/wyfs02/M01/8E/57/wKiom1i-HnGDychRAAAlKtLVqjw872.png-wh_500x0-wm_ 3-wmp_4-s_2836067060.png "title=" 44.PNG "alt=" Wkiom1i-hngdychraaalktlvqjw872.png-wh_50 "/>

the creation and naming of PV,VG,and LV, as shown in:

650) this.width=650; "Src=" https://s3.51cto.com/wyfs02/M02/8E/55/wKioL1i-Hszi6CywAAAg8mlKuck367.png-wh_500x0-wm_ 3-wmp_4-s_2767596574.png "title=" 55.PNG "alt=" Wkiol1i-hszi6cywaaag8mlkuck367.png-wh_50 "/>

format, command:mkfs.ext4/dev/vg_bosswlb/lv_bosswlb, the result is as follows:

650) this.width=650; "Src=" https://s1.51cto.com/wyfs02/M00/8E/55/wKioL1i-Hw3iN-VxAABBU3hS6s0319.png-wh_500x0-wm_ 3-wmp_4-s_2265623765.png "title=" 66.PNG "alt=" Wkiol1i-hw3in-vxaabbu3hs6s0319.png-wh_50 "/>

Before mounting the partition, create the file mount directory, command:mkdir/bosswlb, change the host of the Mount directory, the owning group, the command is as follows:

Chown–r BOSSWLB:BOSSWLB/BOSSWLB

650) this.width=650; "Src=" https://s1.51cto.com/wyfs02/M01/8E/55/wKioL1i-HzuT02JdAAAikUCd_98129.png-wh_500x0-wm_ 3-wmp_4-s_3959289936.png "title=" 77.PNG "alt=" Wkiol1i-hzut02jdaaaikucd_98129.png-wh_50 "/>

2nd: Next we'll create the username: BOSSWLB   , Group and subsidiary groups:      BOSSWLB Home directory:            /BOSSWLB Shell:bash, define uid=620,gid=620

The command is as follows:

Useradd-u 620-s/bin/bash-d/bosswlb bosswlb

650) this.width=650; "Src=" https://s3.51cto.com/wyfs02/M02/8E/55/wKioL1i-H32A20a3AAAOEdQLRbs486.png-wh_500x0-wm_ 3-wmp_4-s_3517829119.png "title=" 88.PNG "alt=" Wkiol1i-h32a20a3aaaoedqlrbs486.png-wh_50 "/>

When generating bosswlb This home directory, the system will error, the content is as follows:

650) this.width=650; "Src=" https://s4.51cto.com/wyfs02/M00/8E/58/wKiom1i-H6ji14ksAAAFetQG2WI815.png-wh_500x0-wm_ 3-wmp_4-s_2288918571.png "title=" 99.PNG "alt=" Wkiom1i-h6ji14ksaaafetqg2wi815.png-wh_50 "/>

processing method:cp–rvf/etc/skel/. /bosswlb/ can do it.

Set up Users BOSSWLB password, the command is as follows:

passwd bosswlb (in Root user)

3rd: Finally, we mount the newly created file system to the /BOSSWLB , the command is as follows:

Mount/dev/vg_bosswlb/lv_bosswlb/bosswlb

automatic mount on boot, you can add it to the configuration file /etc/fstab , as follows:

650) this.width=650; "Src=" https://s2.51cto.com/wyfs02/M01/8E/58/wKiom1i-H83yvsDDAAAtZooLLWE648.png-wh_500x0-wm_ 3-wmp_4-s_2032925901.png "title=" 100.PNG "alt=" Wkiom1i-h83yvsddaaatzoollwe648.png-wh_50 "/>

Build file system on Linux system, build user, modify user group, reset user password