Looking at our example.txt file, we can see that all three sets of characters are rwx. That means everyone has read, write, and execute rights with the file. Programmers can use the digits with the chmod command to assign permission. For example, to give the owner complete permission - r...
21. service command examples Service command is used to run the system V init scripts. i.e Instead of calling the scripts located in the /etc/init.d/ directory with their full path, you can use the service command. Check the status of a service: # service ssh status Check the steatus...
Whatis command is helpful to get brief information about Linux commands or functions. Whatis command displays man page single line description for command that matches string passed as a command line argument to whatis command. Whatis command searches for string in its index databases which is mainta...
Themorecommand allows us to view large files. Unlike thecatcommand, it does not display all content at once. It shows only the content that can fit on the screen. It displays the remaining content when we press theEnterkey. It provides a scroll facility only in the down direction. The l...
30. cat command examples You can view multiple files at the same time. Following example prints the content of file1 followed by file2 to stdout. $ cat file1 file2 1. While displaying the file, following cat -n command will prepend the line number to each line of the output. ...
格式:nice -n command 例如:nice -5 myprogram at 作用:安排一个或多个命令在指定的时间运行一次 格式:at [-f 文件名] 时间 at -d or atrm 删除队列中的任务 at -l or atq 查看队列中的任务 示例:指定在今天下午 17:30 执行某命令(假设现在时间是下午14:30,2011年1月11日) at 5:30pm at 17:...
The ‘start’ command does the equivalentofsetting a temporary breakpoint at the beginningofthe main procedure and then invoking the ‘run’ command.Some programs contain an elaboration phase where some startup code is executed before the main procedure is ...
5 e2fsck Examples 1. Check a partition You should be root to execute this command. If not, you’ll get the following error message. $ /sbin/e2fsck /dev/sdb1 e2fsck 1.35 (28-Feb-2004) /sbin/e2fsck: Permission denied while trying to open /dev/sdb1 ...
In this tutorial, we will explain all about the cURL command, including its installation and syntax. You will also learn several cURL command examples for real-world usage. What is the cURL command? The cURL utility lets you connect to a server and exchange data directly from your system’s...
5 objdump Examples 1. Display file header using -f option Output consisting of only the file header (ELF header) can be displayed using -f option with this command. Consider the following example : $ objdump -f assert assert: file format elf64-x86-64 ...