Display Files

cat

display on the standard output the content of the text file in same sequence as the arguments.

more

more is a command to view (but not modify) the contents of a text file one screen.

less

less is similar to more but with more features

tail

$tail ~bneron/DataBio/Sequences/Nucleique/qr1Large.fasta
...
tgcctaattgttacaaattcattaacagcagtagtgtttaagagctctaagtagctcatacttaaagagtgtttccctct
gcacgtaccaataatctcttagtaagacgactaacttgatgactgagttgttcacaaaacccttccgtagaattatagga
tgtggattttataatacaccgataaaaactactttgaaataggttttcttttcctgtcgtttactgtcagtagctctctg
catagaaatgtcaaataaacagatcttgttttggtttc

it's very useful specially when the files are large.