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situations, Vista--Tour Shanxi villageSystem: Ubuntu 16.04LTS1\ official website Download mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz2\ set up a workgroup:$su#groupadd MySQL#useradd-R-G MySQL MySQL3\ Creating a Directory#mkdir/usr/local/mysql#mkdir/usr/local/mysql/data4\ unzip the mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz and copy to/usr/local/mysql#tar-ZXVF mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz#cp-R/home/jieyamulu/mysql-5.7.18-linux-glibc2.5-x86_64/*/usr/local/mysql5\ Modify the MySQL user's

. mysql_history. pydistutils.cfg. Viminfo.. . bash_logout. bashrc. cshrc. Pip. TCSHRC Zhan Displays the file under the current file in column line format [Email protected] ~]# ls-1FuZhan Print user uid and GID [Email protected]/]# ls-nTotal 68Drwxr-xr-x 2 0 0 4096 Jul 2 14:21 Backuplrwxrwxrwx 1 0 0 7 Usr/bin Bin--Dr-xr-xr-x. 4 0 0 4096 June

Tianyang network technology alliance region I. unexpected Time: PM Location: a RedHatLinux machine: # uname-aLinux *. *. cn. net2.2.5-15 #1MonApr1923: 00: 46edt5oi686unknown Tianyang Network Technology AllianceWww.tian6.netBbs.tian6.com I. accidents　　Time: PM　　Location: a RedHat Linux machine:　　# Uname-Linux *. * .cn.net 2.2.5-15 #1 Mon Apr 19 23:00:46 EDT 1999 i686unknown　　I habitually advanced to/etc/rc. d/init. d. after reading it, I immediately found the exception:　　# Ls-la......-Rwxr-

Cause: the command fdisk is not in your command search path. Solution 1: Add fdisk to your command search path The method is as follows: First, check your current command search path: [Root @ localhost sbin] # echo $ PATH/Usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/bin:/usr/X11R6/bin: /home/vincent/binCheck the path of the fdisk command. [Root @ localhost home] # whereis fdiskFdisk:/sbin/fdisk/usr/share/man/man8/fdisk.8.gz We can see that the fdisk command is no longer in the current command

file. After Entering y, the system will delete the file. If you do not want to delete the file, the data is n. Www.2cto.com instance 2: forcibly delete the file. Command: rm-f log1.log output: [root @ localhost test1] # ll total 4-rw-r -- r -- 1 root 23 10-26 log1.log [root @ localhost test1] # rm-f log1.log [root @ localhost test1] # ll total 0 [root @ localhost test1] # instance 3: delete any. log File. Before deletion, run the "rm-I *" command to confirm the deletion *. log output: [root @ l

Test1 subdirectory and subdirectoriesCommand:Rm-r test1Output:[email protected] test]# LLTotal 24drwxr-xr-x 7 root root 4096 10-25 18:07 SCFDrwxr-xr-x 2 root root 4096 10-26 14:51 test1Drwxr-xr-x 3 root root 4096 10-25 17:44 test2DRWXRWXRWX 2 root root 4096 10-25 17:46 test3Drwxr-xr-x 2 root root 4096 10-25 17:56 test

before deletingCommand:Rm-i *.logOutput:[email protected] test1]# LLTotal 8-rw-r--r--1 root root one 10-26 14:45 log1.log-rw-r--r--1 root root 10-26 14:45 Log2.log[Email protected] test1]# rm-i *.logRM: Do you want to delete the generic file "Log1.log"? YRM: Do you want to delete the generic file "Log2.log"? Y[email protected] test1]# LLTotal 0[[email protected] test1]#Example four: Delete all the files in the Test1 subdirectory and subdirectoriesCommand:Rm-r test1Output:[email protected] test]

: The installation location of the third-party application;/SRV: Data used by services running on the system;/tmp: temporary file storage location;/usr:universal GKFX, read-only data;/var:variable Data files/proc: A virtual file system for outputting kernel-related process information;/sys: A virtual file system for outputting information about hardware devices on the current system;/selinux:security the storage location of information such as enhanced linux,selinux related security policy;[[ema

index node itself and other connections, only if the last connection is deleted, the file's data block and directory connection will be released. That is, the condition that the file is actually deleted is that all the hard connection files associated with it are deleted. (Note: Hard links cannot be created across partitions)Experiment: [[email protected] ~]# Ln/etc/yum.con (2) Blue mark for created hard links-rw-r--r--. 1 root root 0 Jul 05:47 2016-07-30.txt-RW-------. 1 root root 1389 Jul 15:

root 10-26 14:40 log1.log [Root@localhost test1]# rm-f Log1.log [Root@localhost test1]# LL Total 0[root@localhost test1]# Example three: Delete any. log file, ask for confirmation before deletingCommand:Rm-i *.logOutput: Copy Code code as follows: [Root@localhost test1]# LL Total 8 -rw-r--r--1 root 10-26 14:45 log1.log -rw-r--r--1 root 10-26 14:45 log2.log [Root@localhost test1]# rm-i *.log RM: Do you want to delete the generic file "Log1.log"? Y RM:

Total 24drwxr-xr-x 7 root root 4096 10-25 18:07 SCF Copy Code code as follows: Drwxr-xr-x 2 root root 4096 10-26 14:51 test1 Drwxr-xr-x 3 root root 4096 10-25 17:44 test2 DRWXRWXRWX 2 root root 4096 10-25 17:46 test3 Drwxr-xr-x 2 root root 4096 10-25 17:56 test4 Drwxr-

Due to work needs, it took some time to study the two built-in special commands of eval and exec. Because not many are used, it is a bit obscure .. 1. Eval This command is a built-in command in bashshell, which is a little more difficult than other commands. The content following the command is considered as a parameter, but the parameters are scanned twice. The first scan replaces the variables in the parameters, and the second scanThe second scan combines the following parameters as a shell c

in the test1 subdirectory and subdirectory command: rm-r test1 output: [root @ localhost test] # ll total 24drwxr-xr-x 7 root 4096 10-25 scfdrwxr-xr-x 2 root 4096 10-26 test1drwxr-xr-x 3 root 4096 10-25 test2drwxrwxrwx 2 root 4096 10-25 test3drwxr-xr-x 2 root 4096 10-25 test4drwxr-

Owner ID field of the process accessing the file, the process does not have permission to change the context descriptor of a file, either before or after the change.For example, a process that has a rjc:user_r:user_t descriptor can change the descriptor of a file that has a rjc:object_r:user_games_rw_t descriptor to rjc:object_r:user_games_ro_t, However, it does not have permission to change any of the properties of a file that has a john:object_r:user_games_rw_t descriptor.To view the context

deletingCommand:Rm-i *.logOutput:[email protected] test1]# LLTotal 8-rw-r--r--1 root root one 10-26 14:45 log1.log-rw-r--r--1 root root 10-26 14:45 Log2.log[Email protected] test1]# rm-i *.logRM: Do you want to delete the generic file "Log1.log"? YRM: Do you want to delete the generic file "Log2.log"? Y[email protected] test1]# LLTotal 0[[email protected] test1]#Example four: Delete all the files in the Test1 subdirectory and subdirectoriesCommand:Rm-r test1Output:[email protected] test]# LLTot

deletingCommand:Rm-i *.logOutput:[email protected] test1]# LLTotal 8-rw-r--r--1 root root one 10-26 14:45 log1.log-rw-r--r--1 root root 10-26 14:45 Log2.log[Email protected] test1]# rm-i *.logRM: Do you want to delete the generic file "Log1.log"? YRM: Do you want to delete the generic file "Log2.log"? Y[email protected] test1]# LLTotal 0[[email protected] test1]#Example four: Delete all the files in the Test1 subdirectory and subdirectoriesCommand:Rm-r test1Output:[email protected] test]# LLTot

deletingCommand:Rm-i *.logOutput:[email protected] test1]# LLTotal 8-rw-r--r--1 root root one 10-26 14:45 log1.log-rw-r--r--1 root root 10-26 14:45 Log2.log[Email protected] test1]# rm-i *.logRM: Do you want to delete the generic file "Log1.log"? YRM: Do you want to delete the generic file "Log2.log"? Y[email protected] test1]# LLTotal 0[[email protected] test1]#Example four: Delete all the files in the Test1 subdirectory and subdirectoriesCommand:Rm-r test1Output:[email protected] test]# LLTot

/.oracle/var/tmp/.oracle11gMv/var/tmp/.oracle10g/var/tmp/.oracle+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++are backed up in advance-r-xr-xr-x 1 root root 2436 Oct 6 09:47/etc/init.d/init.crs-r-xr-xr-x 1 root root 5538 Oct 6 09:47/ETC/INIT.D/INIT.CRSD-r-x