Linux Learning Notes

Linux Learning Note 1. Common commands

Commands are stored, which commands can be executed?

Root	/sbin /usr/sbin
All Users:	/bin /usr/bin
bin--binary Binary Files Linux all of them are files, binary files Usr-user Sbin-super binary

File processing commands
1	Ls	The English original is the list function: Display directory file attributes can be attached to write, such as Ls-ld		Eg	Meaning
		-A All	Show all files, including hidden files	LS-A/
		-L Long	Detailed information display	[[email protected]   ~]# ls-l Total 14 -rw-------1   root root  1211 04:02   ANACONDA-KS.CFG Drwxr-xr-x 3   root root  4096 Feb 11:20 Desktop -rw-r--r--1   Root Root 31736 Feb 04:02 install.log -rw-r--r--1   root root     0 Feb 03:16   INS Tall.log.syslog Drwxr-xr-x 2   root root  4096 Feb 17:36 test	Drwxr-xr-x             2             root       root     4096      11:20 Every three permissions    represents the number of hard connections    owner      Owning group   file size   creation time Data block block  512 byte The first character is indicated as follows: d  Directory directory -             binaries l  soft link files Each of the three assignments is as follows: R Read reading    w-write write   X-execute execute rwx         r-x             r-x Owner u    belongs to group g       other people o user         group         others
		-D	View Directory Properties	[Email protected] ~]# ls-ld/test Drwxr-xr-x 3 root root 4096 Feb 17:42/test
2	Cd	Switch directories
		Cd/	Go to the root directory
		Cd [Catalogue]
		Cd..	Return to Parent Directory
3	Pwd	English: Print working directory	View current directory	[Email protected] ~]# pwd /root
4	Touch	Create an empty file		[email protected] test]# Touch testfile [Email protected] test]# ls-l testfile -rw-r--r--1 root root 0 Feb 18:51 testfile
5	Mkdir	English: Make directories	Create an empty directory	[Email protected] ~]# mkdir test
6	Cp	English: Copy	Copy a file or directory	copy–r [source file or source directory] [destination directory]

Linux Learning Notes