How to use the Linux basename command

01. Command Overview

basename - strip directories and suffixes from file names

The basename command is used to print the base name of a directory or file. The basename and dirname commands are often used in command substitution in shell scripts to specify output file names that differ from the specified input file names.

02. Command format

basename name[suffix]
basename Option

03. Common options

Show NAME with directory components removed. If SUFFIX is specified, the trailing SUFFIX is removed as well.
--help 
 Display help information and then end --version
 Display version information and then end

04. Reference examples

4.1 Display file names without directories

[deng@localhost ~]$ basename /home/deng/scott_data.sql 
scott_data.sql
[deng@localhost ~]$

4.2 Display file name, excluding directory and suffix

[deng@localhost ~]$ basename /home/deng/scott_data.sql .sql
scott_data
[deng@localhost ~]$ 

4.3 Display file name, excluding directory and suffix

-s specifies the suffix to remove

[deng@localhost ~]$ basename -s .sql /home/deng/scott_data.sql 
scott_data
[deng@localhost ~]$

4.4 Output multiple parameters in order

[deng@localhost test]$ basename -a ./20190712.log ./20190713.log 
20190712.log
20190713.log
[deng@localhost test]$ ls

4.5 Display the name of the last directory

If the last one is a directory, then the name of the last directory will be displayed.

[deng@localhost test]$ basename /home/deng/share/
share
[deng@localhost test]$ 

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