Many Linux users have experienced a lasting sense of accomplishment after composing a particularly clever command that achieves multiple actions in just one line or that manages to do in one line what usually takes 10 clicks and as many windows in a graphical user interface (GUI). Aside from b...
http://www.theunixschool.com/2012/05/awk-join-or-merge-lines-on-finding.html https://stackoverflow.com/questions/15758814/turning-multiple-lines-into-one-line-with-comma-separated-perl-sed-awk === AC M07451 ID VPBX110NAPBX1ACM07452IDVPBX110NAPBX1ACM07452IDVMEIS1_06 NA Meis1 AC M0745...
http://www.theunixschool.com/2012/05/awk-join-or-merge-lines-on-finding.html https://stackoverflow.com/questions/15758814/turning-multiple-lines-into-one-line-with-comma-separated-perl-sed-awk === AC M07451 ID V$PBX1_10 NA PBX1 AC M07452 ID V$MEIS1_06 NA Meis1 AC M07453 ID V$...
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...
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...
Here’s a quick tip that will help you work with multiple zip files on the command line. If you are in a folder and have three zip files in it (a.zip,b.zip,c.zip) that you want to unzip, “no problem,” you think. “I can take care of that with one command.” And you qu...
# command[arg][path]# 名令可选的参数选项(可选)文件或目录(可选)rm-rf/tmp/test.txt # 名令和参数、参数和要操作的文件或目录之间必须有至少一个空格 2. 退出登陆状态 exit logout crtl + d 3. 终端 每次打开一个命令行窗口,都是开启一个新的终端,包括远程连接的窗口,使用tty命令来查看当前窗口的终...
An interactive process viewer for the command line. hwclock Show or configure the system’s hardware clock. Linux Commands – I Command Description iconv Convert text file from one encoding to another. id Show user and group information for a specified user. if Execute a command conditionally. ...
Using sudo with a command-line interface in Linux If you're on Ubuntu,administrative tasksrun through sudo, which implements system-wide changes. For instance, instead of typing useradd linda, you'd use the command sudo useradd linda. Sudo commands do have one requirement tho...
This is a bit absurd. Instead you can solve the problem with a simple one line command: # echo /home/user/1/ /home/user/2/ /home/user/3/ | xargs -n 1 cp /home/user/my_file.txt 9. Deleting Larger Files Sometimes files can grow extremely large. I have seen cases where a single...