5. 使用shell脚本:您可以编写一个自定义的shell脚本,其中包含需要重复执行的命令,并使用循环结构控制重复执行。例如,创建一个`repeat.sh`脚本,其中包含需要执行的命令,并使用while循环实现重复执行: “`shell #!/bin/bash while true; do command sleep 1 done “` 然后使用`chmod +x repeat.sh`命令将脚本设置...
In this brief guide, we are going to learn how to repeat a command until it succeeds in Linux. This can be helpful in many occasions. For instance, you can use this method to verify network connectivity between two or more hosts or check Internet connectivity to see if you are still onl...
A system administrator often needs to run a command repeatedly in a certain periods of time. Often such tasks can be easily completed with simplecron commands. In most of the cases this should work, but the shortest period which you can run cron command is every 1 minute. Believe it or n...
[root@localhost ~]# free --helpUsage:free [options]Options:-b, --bytes show output in bytes--kilo show output in kilobytes--mega show output in megabytes--giga show output in gigabytes--tera show output in terabytes--peta show output in petabytes-k, --kibi show output in kibibytes-m,...
Command:pwd #2) whoami:This command will display the username for the user who is currently logged in to the Linux terminal. Command:whoami #3) clear:When the terminal gets filled up with lots of commands and their output, you can use clear command to clear up your terminal. ...
stat Run a command and gather performance counter statistics test Runs sanity tests. timechart Tool to visualize total system behavior during a workload top System profiling tool. trace strace inspired tool See 'perf help COMMAND' for more information on a specific command. ...
alias - Creates an alias for a command. If options aren't specified it will show all aliases. allneeded - Forces the calculation of all fonts that are needed to preview a set of dvi files. alloc - Shows how much memory is used and free. anacron - Runs commands periodically. answer -...
bg - resume stopped command in background ctrl+d - log out of current session ctrl+w - erases one word in current line ctrl+u - erases whole line ctrl+r - reverse lookup of previous commands !! - repeat last command exit - log out of current sessionVIM:quitting ...
Some key things to know about Linux commands:They are case-sensitive; for example, “ls” and “LS” mean different things. They follow a specific syntax like “command -options arguments.” They can be combined for complex operations using pipelines and redirection. They give you fine-grained...
Use double exclamation points to repeat the last command: !! Search a Command by String Adding a string after the exclamation point runs the latest command that starts with that string. For example, to reuse the latest command that begins withsudo, use: ...