In Linux shell, you can use the up and down keys on your keyboard to scroll through previously used commands. Once you find the command you want, you can edit it – move the cursor with the left and right keys and make the changes you want to it. When done press the Enter key to execute the command.
To see a list of the last commands, use the history command.
– use the history without any options to see ALL the previous commands (this can be a very long list)
– use the history -n to see the last n commands (the last command in the list will be the history command itself)
root@web [~]# history 10 944 2017-05-03 14:57:22 mysqlcheck llp 945 2017-05-03 14:57:31 mysqlcheck roundcube 946 2017-05-03 14:57:41 mysqlcheck -o roundcube 947 2017-05-03 16:20:11 exit 948 2017-05-12 11:12:13 history 3 949 2017-05-12 11:12:31 history 5 950 2017-05-12 11:12:45 w 951 2017-05-12 11:12:49 free -m 952 2017-05-12 11:12:51 uptime 953 2017-05-12 11:12:56 history 10 root@web [~]#
– notice that you can also see how many commands are in history. Look at the number in front of the commands. In the above example, we have 953 commands. – to see and execute the last executed command use !!
root@web [~]# date Fri May 12 11:23:59 EDT 2017 root@web [~]# !! date Fri May 12 11:24:02 EDT 2017 root@web [~]#
Another tip is to use the CTRL+R to search a previously executed command. Just press CTRL+R, and you will see
Here type part of the command you are looking for. When you find it, press Enter to execute it.
CentOS is the most used Linux distribution in the web hosting world. It uses Red Hat Enterprise Linux (RHEL) as its upstream source. More info at CentOS page on Wikipedia
To connect to the Linux shell you can use a software like PuTTY.