asmlinux

⑴ linux下的asm目录，asm代表什么意思

asm是assembly language 的简称，即：汇编语言。asm是一个符号连接，只有在你的主makefile的ARCH 变量赋值，并且编译过一遍内核之后才会指向对应的体系结构，这个文件夹下的东西是体系结构相关的。如：make的时候 /include/asm 指向 /include/asm-x86/

⑵ linux 中 ASM命令作用

oracle 10R2推出了asmcmd这个工具，可以用来管理asm存储上的文件。
1.使用asmcmd命令必须先启动asm实例，不然会有以下报错：rac2-> asmcmd -p
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory (DBD ERROR: OCISessionBegin)2.使用asmcmd必须先指定ORACLE_HOME和ORACLE_SID，注意此处ORACLE_SID是asm的sid，不然会报错：rac2-> asmcmd -p
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory (DBD ERROR: OCISessionBegin)3.asmcmd命令带p参数和不带p参数的作用：
带p，使用asmcmd将显示当前路径：rac2-> asmcmd -p
ASMCMD [+] > ls
DG1/
RECOVERDEST/
ASMCMD [+] > cd DG1
ASMCMD [+DG1] > ls
DEVDB/
ASMCMD [+DG1] > cd DEVDB
ASMCMD [+DG1/DEVDB] >不带p，不显示当前路径：rac2-> asmcmd
ASMCMD> ls
DG1/
RECOVERDEST/
ASMCMD> cd DG1
ASMCMD> ls
DEVDB/
ASMCMD> cd DEVDB
ASMCMD>4.其他相关参数，可使用help查看ASMCMD [+] > help
asmcmd [-p] [command]

The environment variables ORACLE_HOME and ORACLE_SID determine the
instance to which the program connects, and ASMCMD establishes a
bequeath connection to it, in the same manner as a SQLPLUS / AS
SYSDBA. The user must be a member of the SYSDBA group.

Specifying the -p option allows the current directory to be displayed
in the command prompt, like so:

ASMCMD [+DATAFILE/ORCL/CONTROLFILE] >

[command] specifies one of the following commands, along with its
parameters.

Type "help [command]" to get help on a specific ASMCMD command.

commands:
--------
cd

find
help
ls
lsct
lsdg
mkalias
mkdir
pwd
rm
rmalias