irc commands

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Common Liunx commands and common liunx commands

Common Liunx commands and common liunx commands 1. Tomcat-related commands Restart tomcat in linux and view tomcat running logs in real time In Linux, restart Tomcat and run the command! First, go to the bin directory under Tomcat Cd/usr/local/tomcat/bin Use Tomcat to close the command ./Shutdown. sh Check whether Tomcat is disabled Ps-ef | grep java Or ps aux |

Linux executes multiple commands consecutively and linux Multiple commands

Linux executes multiple commands consecutively and linux Multiple commandsIf each command is separated by ";", the next command will be executed no matter whether the command at the front is successfully executed or not.Here, the echo in the second command is intentionally written to one o, and the command execution error does not affect subsequent command execution.In this case, if commands are separated b

Introduction to SED commands and how to use variables in sed commands

the template block.P (uppercase)Print the first line of the template block.QExit sed.R FileRead rows from the file.T labelIf branch, starting from the last line, once the condition is met or the T, T command will lead to branch to the command with a label or to the end of the script.T labelAn error branch starts from the last line. If an error occurs or the T or t command, the Branch is routed to the command with a label or to the end of the script.W FileWrite and append the template block to t

Comparison of common DOS and Linux commands, common linux commands

Comparison of common DOS and Linux commands, common linux commands Comparison of common DOS and Linux commands Many Linux commands typed at the shell prompt are similar to those you typed in DOS. In fact, some commands are identical. This appendix provides common

Summary of Common commands for executing scripts in Oracle databases and common commands in oracle

Summary of Common commands for executing scripts in Oracle databases and common commands in oracle 1. Execute an SQL script file Copy codeThe Code is as follows:Sqlplus user/pass @ servicename Or Copy codeThe Code is as follows:SQL> start file_names Or Copy codeThe Code is as follows:SQL> @ file_name We can save multiple SQL statements in a text file, so that when we want to execute all the SQL statements

<linux built-in commands and external commands >

Built-in commands and external commands under Linux1, the Linux command can be divided into internal commands and external commands:Internal commands are transferred into memory when the system starts, and are resident in memory, so the execution efficiency is high.The external command is the software function of the s

Linux nic ip address configuration commands and some common network configuration commands

= 255.255.255.0GETEWAY = 192.168.1.1ONBOOT = yesTYPE = EthernetNote: BOOTPROTO can only use the configured IP address in static mode.Modify dnsVim/etc/resolv. confThe modification takes effect immediately and starts as well. FormAdd nameserver = ***.***.***.***Up to three candidates can be selected as candidates after the previous failure. Modify host nameEffective immediately:Hostname fc2Start effective:Vim/etc/sysconfig/networkThe format is as follows:NETWORKING = yesHOSTNAME = rh-linux.fc.or

Detailed explanation of linux commands-grep commands (text search tool)

functions:Specific characters used for filtering/searching. Regular expressions can be used in combination with multiple commands. 3. command parameters:-A -- text # Do not ignore binary data.- -- After-context = # In addition to displaying the column that conforms to the template style, the content after the row is displayed. -B -- byte-offset # indicates the number of the first character of the line before the line that conforms to t

Detailed explanation of ln commands in linux commands (creating soft links and hard links)

position you selected, both soft links and hard links are synchronized.Ln commands are used to link files or directories. for example, if you specify more than two files or directories at the same time, and the final destination is an existing directory, all the previously specified files or directories will be copied to this directory. If multiple files or directories are specified at the same time and the destination is not an existing Directory, a

Common Linux commands (4)-Help commands

keyword], apropos [any keyword], command -- Help [Root @ localhost ~] # Apropos fstabendfsent [getfsent] (3)-handle fstab entriesfstab (5)-static information about the filesystemsfstab-Decode (8)-run a command with fstab-encoded encode (3) -Handle fstab entriesgetfsfile [getfsent] (3)-handle fstab entriesgetfsspec [getfsent] (3)-handle fstab entriesnfs (5) -fstab format and options for the NFS file systemssetfsent [getfsent] (3)-handle fstab Entries [root @ localhost ~] # Whatis lsls (1)-List

Basic PostgreSQL commands and PostgreSQL commands in Linux

Ipcclean removes internal and isolated signal sharing signs from the stopped PostgreSQL Server Pg_ctl start, stop, and restart the postgresql service (for example, pg_ctl start starts the postgresql service, which is the same as service PostgreSQL start) Pg_controldata displays the internal control information of the postgresql service Postgres PostgreSQL single-user database service Postmaster PostgreSQL multi-user database service 4. Psql is the most important client program. To e

Why do CD commands need built-in shell commands?

If you do not use the built-in command but fork to output a sub-process and execute it in the sub-process, the path of the parent environment will not be changed. After the execution is completed, it returns to the parent shell environment, and the PWD of the environment is not changed at all, so it will fail. You can write a script to test CD. Sh. #! /Bin/bashCD/home/ Run./CD. SH and you will find that the current shell path has not changed. Similarly, if you want to change many parameters

Common Linux commands and common linux commands

Common Linux commands and common linux commandsDirectory: relative path and absolute path. Absolute path: the path is written in the root directory, for example,/usr/share/doc. Relative Path: the path is not written by/. For example, if/usr/share/doc is to be written under/usr/share/man, you can write it as [cd .. /man: This is the relative path. Cd: Switch directory; pwd: display the current directory; mkdir: Create a new directory; rmdir: d

Common vi/vim commands and common vivim commands

Common vi/vim commands and common vivim commandsWorking Mode INSERT command A attaches text behind the cursor A adds text at the end of the line I insert before the cursor I insert text at the beginning of the line O Insert a new row under the cursor O Insert a new line to the cursorLocating command H move one character to the left/the arrow to the left J. Move down one row/down arrow K move up one row/Up Arrow L move one character to the right/the

Common CentOS commands and common centos commands

Common CentOS commands and common centos commandsSystem Command yum command Yum makecache yum generation CacheYum list installed mysql * check whether the * package has been installedRpm-qa | grep mysql * check whether the mysql * package has been installedYum list mysql * check whether there is an installation packageYum search mysql * search package Restart Reboot-h now Shutdown Shutdown-h now -H to avoid MySql corruptionView CPU More/p

Detailed description of iostat commands and vmstat commands

Detailed description of iostat commands and vmstat commandsDetailed description of iostat commandsIostat is used to output statistics about input and output of CPU and disk, partition, and Network File System (NFS. The iostat command is used to monitor the input/output status of system devices and generate reports to modify system configurations based on statistical reports for better performance.Command Format:Iostat [-c] [-d] [-N] [-n] [-h] [-k |-m]

Linux study note _ 3_common Linux commands _ 6 _ network communication commands

Network Communication commands (relatively simple ): 1. write/usr/bin/write Write [user name] Used to send information to a user, provided that the user has logged on to the server host Otherwise, there is no way to leave a message for him. Therefore, write is a real-time communication tool. End the communication with Ctrl + D E.g. write guest 2. wall [write all]/usr/bin/wall Used to broadcast information to all users Wall [message] [file name] 3. pin

Linux Study Notes _ 3_common Linux commands _ 5 _ compression and decompression commands

Compression and decompression commands: . Gz 1. gzip [GNUzip]:/bin/gzip Gzip option [file] // compressed file,The extension name after compression is .gz.Is the most common and traditional tool in Linux. // Common software source code package formats Features: 1) only files can be compressed and directories cannot be compressed. 2) do not retain the original file E.g. gzipnewfile 2. gunzip [GNUzip]:/bin/gunzip Or gzip-d Decompress .gz . Tar 3. tar:/bi

Usage of test commands and BIT Test commands-test

The difference between the execution and operation of the test command is that the and command changes the destination operand while the test command does not change the destination operand,Only the status of the Flag register is affected, indicating the test result. The test and CMP commands are familiar. The difference is that the test command usually tests a single bit, while the CMP command tests the entire byte, word, or double word. If the bi

Common commands for getting started with Linux-5. Linux text processing commands

Linux text processing commands SortCommand The sort command sorts all rows in the file. The sort command has many very useful options, which were initially used to sort the file content in the database format. In fact, the sort command can be considered as a very powerful data management tool to manage files with similar content to database records. The sort command sorts the content in the file line by line. If the first character of the two lines is

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