md5 is used to verify data integrity, the correctness of files you downloaded.
[admin@localhost]$ md5sum your_file
check multiple file
1) create md5sum.txt file
1st column : md5 string 2nd column : location of the file.
[admin@localhost]$ more md5sum.txt 9e9ccb13b31defc2b5207646d9ba07b5 Ibd11-1_1.fastq.gz df040df4307bc24f54a69c9774d5a72f Ibd11-1_2.fastq.gz a3fa0b9a3d9b2d843319b7ea3374318b Ibd11-2_1.fastq.gz be29dcc8407a09ab1f0316727c1651bf Ibd11-2_2.fastq.gz 8e6f2cbaaf124be4b96b0e03e4ffa680 Ibd11-3_1.fastq.gz 8586451a651c37d4b6b9d72998f581e6 Ibd11-3_2.fastq.gz
[admin@localhost]$ md5sum -c md5sum.txt Ibd11-1_1.fastq.gz: OK Ibd11-1_2.fastq.gz: OK Ibd11-2_1.fastq.gz: OK Ibd11-2_2.fastq.gz: OK Ibd11-3_1.fastq.gz: OK Ibd11-3_2.fastq.gz: OK
