Linux Learning Notes-common commands (ii)

++++++++++++++++++++++++++++++ File Search command +++++++++++++++++++++++++++++++19) file search:find      syntax: Find [Search Range] [Match criteria]      options:-name (search by file name)    -iname (case insensitive)    -size (find \+n-n n based on file size)   &NBS P -user (Search by Owner)                -cmin (find based on file property modification time)-mmin (find based on file content modification time) & nbsp  -amin (search based on recent visits)                connectors:-A (two conditions at the same time),-o two conditions satisfy any one   & nbsp          -type (Find by file type: F file d directory l soft link)      -EXEC/-OK command {} \;(perform actions on search results) & nbsp            -inum (Search by I node)       NOTE: wildcard *, single character match?            1 blocks = 512 bytes =0.5k 20) find files in the file repository: Locate (FAST)       Options:-I ( Case-insensitive)       NOTE: updatedb (update file repository, TMP directory below file is not included in file repository)  21) Search Command directory and alias Information: which 22) Search command directory and help document path: whereis 23) searches the file for string matching lines and outputs       options:-I (Not missingCASE)    -V (exclude specified string) ++++++++++++++++++++++++++++++ file Search command +++++++++++++++++++++++++++++++  ++++ ++++++++++++++++++++++++++ help command +++++++++++++++++++++++++++++++24) get help info: Man [command or profile]      NOTE: 1 Help for the command   5 means help for the configuration file               Whatis View simple information about the command/apropos simple information about the configuration file   &nbsp ;         [command]--help   View command options Help information  25) get help for Shell built-in commands:help      Note: Built-in commands refer to commands in the kernel, which are commands that do not have an absolute path. ++++++++++++++++++++++++++++++ help Command +++++++++++++++++++++++++++++++  ++++++++++++++++++++++++++++++ User Management command +++++++++++++++++++++++++++++++26) add user name:useradd      NOTE: Execute permissions--root 27) Change Password: passwd (to follow password rules)  28) View login user Information:who      NOTE: tty-local terminal  pts-Remote terminal  29) view logged in User details: W ( Show information more detailed than WHO)      30   See how long a user has logged in: uptime++++++++++++++++++++++++++++++ User management Commands +++++++++++++++ ++++++++++++++++   ++++++++++++++++++++++++++++++ Compression Decompression Command +++++++++++++++++++++++++++++++31) Compressed Files: gzip (only compress files, cannot compress folders)  --suffix. gz 32) Extract files: gunzip 33) package directory:tar      options:-C ( Package)    -V (Show details)    -F (Specify file name)    -Z (decompression)    -X (unpacking)  34) compress files or directories: Zip (after compression, protect source files)       options:-R compression directory  35) Extract files or directories: unzip 36) Compressed files: bzip2 (similar to gzip)       option:-K ( Preserve source files after compression)       Directory Compression example: TAR-CJF temp.tar.bz2 temp 37) Extract files:bunzip2       Directory Decompression Example: TAR-XJF temp.tar.bz2++++++++++++++++++++++++++++++ compression decompression command +++++++++++++++++++++++++++++++    ++++++++++++++++++++++++++++++ Network command +++++++++++++++++++++++++++++++38) send messages to the user to Ctrl+d end:write      Syntax: write [user] 39] Send broadcast message: wall (send information to all current online users)       Syntax: wall [information] 40] Test network connectivity:ping  & nbsp   Syntax: ping [options] [ip]      options:-C (number of pings)  41) view and set network card information:ifconfig      syntax: ifconfig [ Nic name][ip] 42) view Send e-mail:mail      syntax: Mail [user name]      Note: q--exit     h--list     numbers--the first few letters  43) view current and past logged-in User information: last 44) View last login information for a specific user: lastlog& nbsp     Example: lastlog-u [user's uid] 45] shows the path between packets to the host: traceroute 46) displays network-related information:netstat      Options:-T (TCP protocol)    -U (UDP protocol)    -L (listener)    -R (routing)    -N (show IP address and port number)     & nbsp; Note: Netstat-tlun View native listening ports            netstat-an   View all network information in this machine            NETSTAT-RN     View native routing table (Gateway)  47) Configure the network:setup      NOTE: After the configuration is ready to restart the network service will not take effect-- Service network restart 48) Mount command: Mount/umount (uninstall)       Syntax: Mount [-t file system] device file name mount point +++++++++++++++++ +++++++++++++ Network Command +++++++++++++++++++++++++++++++  ++++++++++++++++++++++++++++++ power off restart command ++++++++++++++ +++++++++++++++++49) shutdown restart:shutdown      options:-H (shutdown)    -R (restart)    -C (Cancel previous shutdown command)   & nbsp   Example: shutdown-h/r now\ shutdown-h/r 20: 20 50) Other shutdown commands halt          poweroff    /     init 0  &nbs P   Other restart commands reboot    /    init 6  system runlevel: (init)
0 Shutdown 1 Single User 2 not fully multiuser, without NFS service 3 full multiuser 4 Unassigned 5 Image interface 6 restart 51) View System RunLevel: RunLevel (can also see last run level) 52) Exit Login command : logout++++++++++++++++++++++++++++++ Power off restart command +++++++++++++++++++++++++++++++

Linux Learning Notes-common commands (ii)