I am a bit interested in this command and would like to share it with u people…
If you want to perform any of the actions on receiving some signal in shell you can do that by “trap” command.
For ex, I would like to create a file when it receives a TERM signal.
I can do this by below way
[root@dhcp208-213 ~]# ls |grep hi =======> There is no file exist in name “hi”
[root@dhcp208-213 ~]# trap “touch hi” TERM ===> I am making a TRAP for the “SIGTERM”
[root@dhcp208-213 ~]# trap ====> This command will show you the TRAP confuigured trap — ‘touch hi’ SIGTERM [root@dhcp208-213 ~]# echo $$ 32190 [root@dhcp208-213 ~]# kill -TERM 32190 [root@dhcp208-213 ~]# ls |grep hi ====> Now we have “hi” file existing in cwd.. hi [root@dhcp208-213 ~]#
I will explain more on this in later article ..:)