Command Usage

Linux allows a program to continue running after exiting the login? We can use the Nohup command and the disown command.　Nohup command usage: nohup command [parameters] ... Or: The NOHUP option ignores the suspend signal to run the specified command.    &http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; ...

We say that the main purpose of program debugging is to observe variable changes. But if the program keeps running until it stops or fails, there will be no chance to observe any variables. Therefore, how to effectively control the execution of the statements in the program, so that when the appropriate time to pause, the debugger to display or set the value of some of the storage unit and then continue from where to stop, is the debugger should have a basic function. In this section we will specifically describe how to control the operation of the program. The first problem with program execution control is to set breakpoints. A breakpoint ...

1.free This command is used to view the current system memory usage, which can display the remaining and used physical memory, swap memory, shared memory, and kernel buffers in the system. 2. Shutdown This command is used to shut down or enter a single maintenance mode. The 3.data Data command can display the date and time of the current system. The clock command can also be used to display the current date and time of the system (by default, ordinary users cannot perform the clock command and must log on with the root account). For example: [Root@teache ...

The 1.DD DD command is used to copy a file. 2.edquota This command can be used to set the disk space limit for users and groups of users. 3. Fdisk This command is used to perform a disk partition under Linux. 4.MKFS This command is used to build a Linux file system. 5.mount This command is used to assemble a file system. 6. Quota this command to restrict and display the disk space available to the user.

Yum (full name is Yellow dog http://www.aliyun.com/zixun/aggregation/34037.html ">updater, Flushes) is a shell front-end package manager in Fedora and Redhat as well as SuSE and CentOS. Based on the RPM package management, can automatically download the RPM package from the specified server and install, can automatically handle dependency relationship, and install all dependent ...