covb utilities

Compression command: *. Z compress program zookeeper case; *. Bz2 Bzip2 program zookeeper case; *. GZ gzip program upload history case; * The resources packaged by the. Tar program have not been deleted; * .Tar.gz tar program packaging example, which has passed the gzip example Compress filename compressed file plus [-D] uncompress Gzip filename compression plus [-D] decompress zcat 123.gz to view the compressed file content Bzip2-Z filename compression plus [-D] unzip bzcat filename.bz2 to view

sets the priority nice-n-5 vi -----> use root? 1 ?? Nice plant? -5, used? Adjust vi renice adjust priority runlevel display current runleveldepmod analysis loaded module dependency lsmod show loaded system module modinfo display kernel module information insmod loaded module modprobe automatic processing load module rmmod delete Module chkconfig check, set various system services chkconfig -- list -----> list various service statuses ntsysv set various system services cpio backup file compress

[-d] unzip bzcat filename.bz2 to view the compressed file contentTar-cvf/home/123.tar/etc package without compressionTar-xvf 123.tar unpacksTar-zxvf/home/123.tar.gz unzip with gzipExtract tar-jxvf/home/123.tar.bz2 with bzip2Tar-ztvf/tmp/etc.tar.gz view tar contentCpio-covB> [file | device] partsCpio-icduvAccount Management/Etc/passwd system account information/Etc/shadow account password information is encrypted by MD5 32-bitAdd "*" in front of the p

[-d] decompress zcat 123.gz to view the compressed file content Bzip2-z filename compression plus [-d] unzip bzcat filename.bz2 to view the compressed file content Tar-cvf/home/123.tar/etc package without compression Tar-xvf 123.tar unpacks Tar-zxvf/home/123.tar.gz unzip with gzip Extract tar-jxvf/home/123.tar.bz2 with bzip2 Tar-ztvf/tmp/etc.tar.gz view tar content Cpio-covB> [file | device] parts Cpio-icduv Newbie School: software installation pa

from a file or device to the system-D: The directory is automatically created so that no path cannot be found when the restore occursC: A relatively new Portableformat-mode storage-B: Let the preset blocks can be increased to 5120bytes, the default is 512bytes, make backup speed faster- u: Update to overwrite old files with newer files-V: Displays the file name in the backup process on the screen-T: View file or device content created by CpioUnzip the Cpio file:CPIO-IDMV Unzip the img file:CPIO

often with another hard disk that is completely backed up or a tape drive!1. Use Cpio to back up and reverse backup[Root @test/root]# Find/-print | Cpio-covb >/dev/st0 [Root @test/root]# Cpio-iduv 2. Use tar to back up[Root @test/root]# tar-zcvfp host.tar.gz/--exclude/proc--exclude/mnt--exclude/tmp[Root @test/root]# TAR-ZXVF host.tar.gzBasic tools for sub-backup:As for the partial backup, let's explain it in simple tar!! If we need to back up the dat

Incremental backup of full backups (incremental backup) Considerations for reduction Principles for Incremental backups The so-called incremental backup, refers to the system after the first full backup, after a period of time to run, compare The difference between the system and the backup file, and then the gold backs up the difference file. Backup software used for incremental backups Common tools for full backups are: DD, Cpio, Dupm/restore Direct Incremental backup command: DUPM D

] ~]# DD IF=/DEV/SDA of=/dev/sdb# since DD is a read sector, the/DEV/SDB disk can not be formatted. It's very convenient!Tool 2, Cpio command. Back up all file names, but you have to work with find or other instructions to find the file name to handle it properly.# example: Use Cpio to fully backup and restore the entire system, assuming the storage media is a SATA tape drive:[[email protected] ~]# Find/-print | Cpio-covb >/dev/st0 [[email protected]

) (HOST = renx) (PORT = 1521 )))(CONNECT_DATA =(SID = tg4sybs))(HS = OK) (notify oracle to use heterogeneous services here)) 4. Restart the listener:Lsnrctl stop;Lsnrctl start;B. Data migration through ODBC:Iii. Migration functions of some database software:A. PL/SQL Developer:1. Tools-> Export Tables 2. Tools-> Import Tables 3. Tools-> ODBC Importer 4. Tools-> Text Importer 5. Tools-> Export User Object 6. Tools-> Data Generator B. Toad? For Oracle:1. Database-> EXPORT-> Data Pump Export Wizar

If =/dev/Zero of =/boot/initrd-evms BS = 1 m COUNT = 16mke2fs-F-M 0-B 1024/boot/initrd-evms A.3.2. mount the initrd In order to copy all the required files to the initrd, The initrd must be mounted through a loopback device. to mount the initrd through a loopback device requires that you have loopback support compiled in your kernel (or as a kernel module ). see the "Block devices" menu in the Kernel configuration for more information about loopback. Mkdir/mnt/initrdmount

Create a basic compiling environment The first thing that is indispensable is the internal handler and the basic correspondence handler. if the system does not have security issues, follow these steps: sudo apt-get install build-essential Installing OpenGL library Next, we will introduce the library we will use. First, install OpenGL library. sudo apt-get install libgl1-mesa-dev Installing OpenGL utilities OpenGL