In this tutorial, I use the tr command to translate or delete characters. Now, let’s go tr command in Linux for example.
What does tr command mean?
tr – translate or delete characters
Syntax
tr [OPTION]... [INPUT [OUTPUT]]On the man page, the describes it
- tr – translate or delete characters.
- man tr – More details information about tr command.
tr command in Linux with example
I have created a file tr_command.txt as below
[vagrant@DevopsRoles ~]$ cat tr_command.txt HuuPV, My website DevopsRoles.com and HuuPhan.com.SN:199x. Devops Roles. Devops Roles. Devops Roles. Devops Roles. Hello world :)
How to convert small letters into capital letters.
[vagrant@DevopsRoles ~]$ cat tr_command.txt | tr [:lower:] [:upper:] HUUPV, MY WEBSITE DEVOPSROLES.COM AND HUUPHAN.COM.SN:199X. DEVOPS ROLES. DEVOPS ROLES. DEVOPS ROLES. DEVOPS ROLES. HELLO WORLD :)
The following command is used to convert each space of the text by a newline (\n)
[vagrant@DevopsRoles ~]$ cat tr_command.txt | tr [:space:] '\n' HuuPV, My website DevopsRoles.com and HuuPhan.com.SN:199x. Devops Roles. Devops Roles. Devops Roles. Devops Roles. Hello world :)
uses –s option for search and replacing any string from a text
[vagrant@DevopsRoles ~]$ cat tr_command.txt | tr -s ' ' '\t' HuuPV, My website DevopsRoles.com and HuuPhan.com.SN:199x. Devops Roles. Devops Roles. Devops Roles. Devops Roles. Hello world :)
Delete numbers
[vagrant@DevopsRoles ~]$ cat tr_command.txt | tr -d "[:digit:]" HuuPV, My website DevopsRoles.com and HuuPhan.com.SN:x. Devops Roles. Devops Roles. Devops Roles. Devops Roles. Hello world :)
Output the converted output to a file
[vagrant@DevopsRoles ~]$ cat tr_command.txt | tr "[:upper:]" "[:lower:]" > result_tr.txt
Conclusion
tr command is the simple command in Linux. It is used to translate or delete characters. Thank you for reading the DevopsRoles page!
