Sort files with specific order

Question

I have files like

file_fooX_barY_tests.txt

how can I list them in incremental after looping first on 'foo' and then looking in the number following 'bar' ? ie

file_foo100_bar1_test.txt
file_foo100_bar100_test.txt
file_foo100_bar150_test.txt
file_foo200_bar1_test.txt
file_foo200_bar100_test.txt
file_foo200_bar250_test.txt

doing a standard ls, list for example

file_foo100_bar100_test.txt
file_foo100_bar150_test.txt
file_foo100_bar1_test.txt

so, the 'bar100' and 'bar150' come before 'bar1'

thanks

Answer 1

I think sort -V would do just the trick. It is meant to sort by "version order".

Example :

$ echo """file_foo100_bar150_test.txt
file_foo100_bar1_test.txt
file_foo200_bar250_test.txt
file_foo200_bar100_test.txt
file_foo200_bar1_test.txt
file_foo100_bar100_test.txt
""" | sort -V

file_foo100_bar1_test.txt
file_foo100_bar100_test.txt
file_foo100_bar150_test.txt
file_foo200_bar1_test.txt
file_foo200_bar100_test.txt
file_foo200_bar250_test.txt