linux ls command to list file with certain characters in filename

Question

I have files with name 145345000_abcd_20211201 100045430_abcd_20211130 143240000_abcd_20211129

in this ( abcd ) remains constant rest of the numbers in beginning and timestamp at the end changes every day. i want to list all such files in a txt file I am doing the following ls ${mypath}/ > ${mypath}/my_list.txt

this will list all files and folder in mypath where I want only file with ( abcd ) in file name please guide. i Have tried many combinations already

Answer 1

Use grep to filter the files with abcd like this:

ls ${mypath}/ | grep abcd > ${mypath}/my_list.txt

Alternatively, you can use ls only like this:

ls -1 ${mypath}/*abcd* > ${mypath}/my_list.txt