list of learning management systems

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Linux Learning Essays-common commands for system daily management

/s txcmp/s rxmcst/s12:10:01 AM Lo 0.00 0.00 0.00 0.00 0.00 0.00 0.0012:10:01 AM eth0 0.62 0.04 0.04 0.01 0.00 0.00 0.0012:10:01 AM eth1 0.59 0.01 0.04 0.00 0.00 0.00 0.00RXPCK/S indicates the number of packets received per second txpck/s Indicates the number of packets per second rxkb/s amount of data received per second txkb/s amount of data sent per second5 free View memory conditionTotal used free shared buffers cachedmem:1906900 274296 1632604 232 24268 111232-/+ buffers/cache:138796 176810

Linux Learning-File management (2)

Tags: Create directory text replace multilevel directory dir batch col how spaceNine, move, rename filesMV Moving FilesFormat: mv+ source file + target-I Interactive, pre- overwrite hints -F forced override rm Delete files and directories - I. Interactive-F Mandatory -R Recursive Delete directory common commands rm-rf Rename changing file names in bulk with string substitution (wildcard characters are supported) Format: rename+ original string + target string + file

Linux Learning Summary (23) System Management Tips 2

status, listening portnetstat -lnp-l lists only the service states that are in Listen (listening)-N refuses to display aliases, showing all numbers converted to numbers-P Displays the program name that establishes the associated linkNETSTAT-LNP |grep + port number or service nameYou can see if a service is started, or you can view the process with PSnetstat -ltnpView Only TCPnetstat -lunpView Only UDPNetstat-an List all port statesIf the server you a

MySQL Learning notes (log management)

view stop Simply comment out the corresponding options in the configuration file and restart the delete mysqladmin-u root-p flush-logs execute the above command, MySQL first creates a new error log and then renames the old error log to F Ilename.err-old. If the administrator believes that you do not need to save the old log, you can directly delete the operation query log Universal query logging user All operations on the MySQL server, including the MySQL server startup and shutdown informa

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