In the terminal (similar to the Windows2K command prompt), you have a headache every time, with a Tab button, everything is saved. For example, we have to decompress MySQL-3.23.38.tar.gz files, so many decimal points and other symbols, some files must be case sensitive, one but write wrong, it is wrong. We can write: TAR ZXVF M Note the last key, press the M and keys, and the system will automatically write a file name with M head in the current directory. This is equivalent to writing: tar zxvf mysql-3.23.38.tar.gz If the current directory is more than one file name is M, then press 2 keys, the system will list all M headers , Then write a few letters according to the situation, then press the key to supplement the rest of the letter. The above operation is tested in Redhat Enterprise Linux 3, and I estimate that Redhat Linux should have this feature.