2. Run multiple commands using AND (&&) operator 💡 When you chain multiple commands with&&, the second command will only be executed if the first runs with no errors. If you want to run multiple commands in such a way that if one of the commands returns an error, the later part of...
Executing commands one after the other in a command line is a regular activity for a Linux administrator. But, by doing so, we may face the following issues: The first command can take a long time to complete – one has to wait until then to run the second command We may miss a part...
Running multiple Linux commands from a single bash prompt is not only efficient, it's easy to do.
If you are managing multiple Linux servers, and you want to run multiple commands on all the Linux servers, but you have no idea about how to do it. There is no need to worry, in this simple server management guide, we will show you how to run multiple commands on multiple Linux serv...
18. Run a mini calculator This function defines a quick calculator on the command line with variable precision (the default is 2). It usesbc. Create the function like this: $ function qqbc() { echo "scale=${2:-2}; $1" | bc -l ...
-s squeeze multiple blank lines into one -NUM specify the number of lines per screenful +NUM display file beginningfromline number NUM +/STRING display file beginningfromsearch string match -V output version informationandexit [root@iZ2ze2m3z176dpbiaolifiZ~]# ...
原文发于我的独立博客:通过《The Linux Command Line》入门linux命令行 此书网站:The Linux Command Line,它是免费的。 它有中文版,而且还有一个好听的名字:快乐的 Linux 命令行 学习有两种方法,一种是系统的学,一种是根据实际需求来学。两种各有优缺点,前一种,知识不会有缺漏,对日后的融会贯通和触类旁通有...
To run commands on multiple servers, add the servers to a hosts file as explained before. Then runpdshas shown; the flag-wis used to specify the hosts file, and-Ris used to specify the remote command module (available remote command modules include ssh, rsh, exec, the default is rsh)....
Wrap input line to fit in a specified width. for Expand words and run commands for each one in the resultant list. formail Used to filter standard input into mailbox format. format Used to format disks. free Show free and used system memory. fsck Check and repair a Linux file system ft...
Linux employs three operators to help you execute multiple commands in one line: TheSemicolon(;) operator TheLogical OR(||) operator TheLogical AND(&&) operator All of these operators can run two or more shell commands at once. However, knowing which operator to use and when can help you ...