Linux Fundamentals 3

Root user does not have permission settings if the file has X, you can perform permissions on the directory R: You can view the directory under the file name W: can be created in this directory, delete, modify the file name x: can CD into the directory for files: Executable files need to have readable permissions tar cvf Test.tar * C > new v details F file tar-tf Test.tar  See what Files tar-xvf test.tar x-> extract Tar-cvf/tmp/test/tar *tar-xvf/tmp/test.tar-c /tmp/test2 tar zcvf/tmp/yasuowenjian.tar.gz. Tar xvf/t,p/yasuowenjian.tar.gz-c/tmp/tar cvjf trst.tar.bz2 *tar xvf  TEST.TAT.BZ2 command-line mode---> Extended mode shit: Extended mode---command-line mode ESC command-line mode---Edit mode a,i,o edit mode---command line ESCGG end of the beginning of G  file H The last line of the current screen H: When the first line of the strong screen nyy->pndd->pu-> undo fallback ctrl+r--go ahead and remove the Gruf plus init=/bin/bash# make sure the password is changed successfully mount-o Remount, RW/   VIM/ETC/PASSW Remove the root line first Xecho ' 123 ' |passwd--stdin root

　　

Linux Fundamentals 3