昨天使用的一些Linux下的命令

昨天使用的一些Linux下的命令

which - shows the full path of (shell) commands.
whereis - locate the binary, source, and manual page files for a command.
slocate - Security Enhanced version of the GNU Locate. 
          Secure  Locate  provides  a  secure  way to index and quickly search for files on your system. It uses
       incremental encoding just like GNU locate to compress its database to make searching faster, but it  will
       also store file permissions and ownership so that users will not see files they do not have access to.

          This  manual page documents the GNU version of slocate.  slocate Enables system users to search entire
       filesystems without displaying unauthorized files.

tee - read from standard input and write to standard output and files
vipw, vigr - edit the password or group files
cat - concatenate files and print on the standard output
cat /etc/passwd

id - print real and effective UIDs and GIDs
who - show who is logged on
users - print the user names of users currently logged in to the current host
finger - user information lookup program

!! - execute the last command