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pwd - show the current directory (the directory where the user is located) ls - list files and directories ls -al - formatted list with hidden directories and files cd /etc - change the directory to / etc cd - change to home directory mkdir mydir - create mydir directory rm file.txt - delete file.txt rm -r mydir - delete mydir directory recursively rm -f file.txt - delete force file.txt rm -rf mydir - delete a forced directory with subdirectories mydir cp file1 file2.txt - copy file1 to file2.txt cp -r dir mydir - copy dir to mydir; will create the mydir directory if it does not exist mv file2.txt file2 - rename or move file2.txt to file2. mv * ../../FOLDER_1/FOLDER_2/ - move files to folder If file2 is an existing directory - moves file2.txt to the file2 directory ln -s file filelink - create a symbolic link filelink to file file touch myfile - create myfile cat> file.txt - direct standard input to file.txt cat file.txt - print the contents of file.txt more file.txt - display the contents of file.txt head file.txt - print the first 10 lines of file.txt to the console tail file.txt - print the last 10 lines of file.txt to the console tail -f file.txt - display the contents of file.txt as it grows, starts from the last 10 lines
- Redirection from one place to another, for example: We will output the last 10 lines from the test file and insert them into the oktest file, to do this, run the following command: tail test> oktest. If the oktest file did not exist, then it will be created.
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ps - display current user active processes top - show all running processes and brief information about system resources kill pid - kill the process id of which pid killall proces - kill all processes named proces bg - list of stopped and background tasks; continue execution of a stopped task in the background fg - brings to the forefront the latest tasks fg n - bring task n to the fore
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File permissions in BusyBox: chmod 640 file - replaces file file permissions with 640. Rights are assigned separately for the user, groups and for all others addition: 4 - reading (r) 2 - record (w) 1 - execution (x) Chmod examples: chmod 777 - read, write, execute for all users chmod 751 - read, write, execute for the owner; reading, performance for the group; and only execution for other users. Additional options can be viewed by typing the command: man chmod.
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ssh user @ host - connect to host as user user ssh -p port user @ host - connect to host host on port port as user user ssh-copy-id user @ host - add your key to the host node for user user to enable login without password and by keys
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grep pattern files - search for pattern in files grep -r pattern dir - search recursively for pattern in dir directory command | grep pattern - search for pattern in command output locate file - find all files named file
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date - display the current date and time of the router cal - display the calendar for the current month uptime - show the current uptime (the system’s operating time since its loading) w - show users online whoami - the name under which you are logged in finger user - show user information user uname -a - show kernel information cat / proc / cpuinfo - processor information cat / proc / meminfo - memory information man command - show manual for command command df - show disk usage information du dir – print the “weight” of the dir directory free - memory usage and swap whereis app - possible location of the app program which app - which app will be launched by default
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tar cf file1.tar files1 - create a tar archive named file1.tar containing the file files1 tar xf file1.tar - unzip the file1.tar archive tar czf file1.tar.gz files1 - create file1.tar.gz archive with gzip compression tar xzf file1.tar.gz - unzip tar archive with gzip compression tar cjf file1.tar.bz2 - create file1.tar.bz2 archive with Bzip2 compression tar xjf file1.tar.bz2 - unzip the tar archive with Bzip2 compression gzip file1 - compress file1 and rename to file1.gz gzip -d file1.gz - decompress file1.gz to file1
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ifconfig - show settings for found network interfaces ping host - ping the host node and print the result whois domain - get whois information for domain dig domain - get DNS information for domain domain dig -x host - reverse look up DNS information about host wget file - download file file wget -c file - continue paused or broken file download
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/ opt / bin / ipkg-opt install program / package name (installation) / opt / bin / ipkg-opt remove program / package name (removal) dpkg -i pkg.deb - install the package (Debian) rpm -Uvh pkg.rpm - install the package (RPM)
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cd application-1.0.2 ./configure make make install
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Ctrl + C - complete the current command Ctrl + Z - stop the current command, continue with fg in the foreground or bg in the background Ctrl + D - log off, same as exit Ctrl + W - delete one word in the current line Ctrl + U - delete line !! - repeat the last command exit - log out