Ctrl + S to stop scrolling; press Ctrl + Q key recovery scrolling
Ctrl + c acts to terminate the current execution of the program from the command line,
Ctrl + d is equivalent to the exit command to exit the current shell
Clear screen clear or Ctrl + l
/ Root directory
cd Change directory
cd .. parent directory
cd ~ return to the root directory ( / the root)
ls List directory
-a: All files, together with (The file begins with the) hidden files are listed along to -d: list only the directory itself, rather than list the files in the directory data
-l: long serial data out, it contains the attribute data and file permissions, etc.
cat positive sequence read files
-b: lists the line number, line number do only for non-blank line display, blank lines are not marked line number
-n: lists the line number, line number blank lines marked
tac reverse to read the file
head displayed at the beginning of ten lines
-n last twenty lines 20 show
tail displays the last ten lines
-n last twenty lines 20 show
-f continued to flush the print content
less by page to display text, page flip up and down
In less run time can be entered:
/ String: down search "string" (case sensitive)
? String: up search 'string' (case sensitive)
q: Quit less
-m: Displays the current percentage progress page
less may be used pagedown [] and [] pageup key page forward and page, so it looks more convenient.
rm command to delete
-rf forcibly remove the specified path will delete all files and directories under the path
-f delete a file
-r Removes the specified directory
extract jar or a compression war, jar package
-xvf extract to the directory where the
ps Process Viewer
-ef | grep process name to see the processes running path and information (grep characters to find )
cp copy
-f overwrites the file, without prompting
-i overwrite the file, prompting
-r will copy all files in the directory
Format cp -i file / new directory
mkdir create a folder
-p sure that the directory name exists, it does not exist to build a
Linux output redirection > and >> differences are as follows:
>: Will overwrite the file, if the file will overwrite the contents inside.
>> This is the output append to the target file. If the file does not exist, create the file.
>> : Append file, that is, if the contents of a file inside the new content will be appended to the end of the file.
> Is directed to a file, if the file does not exist, create a file; if the file exists, it will be empty. Generally, when we clean up the backup log file, is this: first backup log, then the `>` will clear the log file (the file size becomes 0 bytes).
chmod (chmod permissions management commands change the permissions mode of a file abbreviated )
u behalf of the owner, the X- behalf of the Executive authority. + To add permissions. chmod u + x file.sh says of the current directory file.sh owner of the executable file of the right to increase
