How could I input a folder of bed, bim, fam files with different chromsomes to plink as --bfile mydata?

Question

[zhaolin20042008]

Hello, I am new in LD analysis. I have a snp list from different chromosomes and a list of regions (less than +/- 5000 bp to snps) for LD calculation. The1000g dataset is a folder including the bed, bim, fam files of different chromosomes, the prefix name is chrXX_EUR. How could I input the folder of binary files together to plink as --bfile mydata?

Thanks