I am a lazy person, I admit. I hate to use sftp to download more than 10 NMR experiment data. If possible, I always use some GUI program to drag-and-drop files. However, commands are still necessary to know, at least, put somewhere for quick search/reference.
[The following lines are copied from :http://www.cs.unc.edu/help/sftp/commands.html%5D
sftp [-vc] [-b batchfile] [-o ssh_option] [host]
cd path Changes remote directory to path.
lcd path Changes local directory to path.
chgrp grp path Changes group of file path to grp. grp must be a numeric GID.
chmod mode path Changes permisssion of file path to mode.
chown own path Changes owner of file path to own. own must be a numeric UID.
exit Quits sftp
get remote-path [local-path] Retrieves the remote-path and stores in on the local machine. If the local-path name is not specified, it is given the same name that it has on the remote machine.
help Displays help text.
lmkdir path Creates local directory specified by path.
ln oldpath newpath Creates a symbolic link from oldpath to newpath.
lpwd Prints local working directory.
ls [path] Displays remote directory listing of either path or current directory (if path is not specified).
mkdir path Creates remote directory in location specified by path.
put local-path [remote-path] Uploads local-path and stores it on the remote machine. If the remote-path name is not specified, it is given the same name as it has on the local machine.
pwd Displays remote working directory.
quit Quits sftp
rename oldpath newpath Renames remote file from oldpath to newpath.
rmdir path Removes remote directory specified by path.
rm path Deletes remote file specified by path.
symlink oldpath newpath Create a symbolic link from oldpath to newpath.