CPP_CHEN的专栏

1) The metacharacters2)  The greedy qualifiers3)  The non-greedy qualifiers4) The ranges[12345], [^"], [a-z], [-0-9], ...5) The grouping and backreferences6) The alternatives

(1) The command linetop -hv|-bcHisS -d delay -n limit -u|U user -p pid -w [cols]# dump top to a text file (-b batch mode)top -b -n 1 > top.txt # use command line instead of command name (-

How To Analyse Output Of /proc/meminfo | Linux  The /proc filesystem is pseudo filesystem. It does not exist on a disk. Instead, the kernel creates it in memory. It is used to provide in

"free" is used to check the system's memory information.Let's understand its output.sysadmin@ubuntu:~$ free                 total             used            free           shared    buffers

(1) 远程关闭一台Windows的机器net rpc shutdown -I ipAddressOfWindowsPC -U username%password (2) !$是一个特殊的环境变量，它代表了上一个命令的最后一个字符串(3) sudo !! 以root的身份执行上一条命令 。(4) "cd –" 回到上一次的目录(5) ‘ALT+.

Under Linux, the dd command can be used for simple I/O performance measurements. This article will provide valuable information about which parameters should be used.Contents [hide]