Piping – using | symbol

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Pipelines (|) We often want to take the output of one command and pass it on to another. The standard way of performing this is using a pipeline, referred to as pipe, or pipeing the output. The pipe is a vertical bar ‘|’. On a standard US keyboard this shares the same ‘\’ key, but… Continue reading Piping – using | symbol

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Redirect output – using > symbol

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The > symbol is used to redirect the output of a command. Redirecting stdout, stdin and stderr (> <) Unless a command is piped into another the output normally goes to the standard output (stdout) which is normally the screen. The input is normally taken from standard input (stdin) which is normally the keyboard. To automate processes… Continue reading Redirect output – using > symbol

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Using wildcards in Linux

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Wildcards (also referred to as meta characters) are symbols or special characters that represent other characters. You can use them with any command such as ls command or rm command to list or remove files matching a given criteria, receptively. There are three main wildcards in Linux: An asterisk (*) – matches one or more occurrences of any character, including no character.… Continue reading Using wildcards in Linux

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Simple Linux commands

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These are a list of the most commonly used linux commands Command Description ls It is a list command and will display the directories and files visible under the present working directory ls -R Goes a step further to display or list files in sub-directories of the present working directory ls -a The argument -a… Continue reading Simple Linux commands

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linux man command (manual)

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The man command is used to view a system’s reference manuals(man pages). The command gives users access to manual pages for command-line utilities and tools. Here is the example output for man ftp that explains the usage of ftp command. type q to exit from the manual screen Each manual page is divided into sections: NAME, SYNOPSIS, CONFIGURATION,… Continue reading linux man command (manual)

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linux ls command

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The basic syntax of the LS command is as follows: The LS -l command lists files and directories together with additional information like permissions, owner, date of creation, etc. Let’s look at the image below before getting to every column and data presented. A common variation is the ls -ltr. It is used with file… Continue reading linux ls command

ps command Linux

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The ps command in Linux is used to display about running processes on the system. You can get information like process ID (PID) for the processes you or any other user is running on the same Linux system. The x option (Note: no hyphen) will display all the processes even if they are not associated… Continue reading ps command Linux

Tools to connect to Linux from Windows (Putty and MobaXterm)

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Putty is the most popular tool to connect to the Linux server. Putty is a very simple application interface that can open different port connections. Download Putty from https://putty.en.softonic.com/ or Get Putty (Unofficial) – Microsoft Store Click on the icon and enter the connection properties. enter the address and port (most commonly 22) Click on… Continue reading Tools to connect to Linux from Windows (Putty and MobaXterm)

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Oracle stage properties

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Oracle Database Select database Category There are 4 new stages in the database That is in 8 version I way Enterprise Classic Federation Netezza Enterprise ODBC  To read the data from Oracle We have 4 options in Reading Method Read Method = Table /user-defined  SQL / Auto generated / SQL builder generated SQL Oracle Data set… Continue reading Oracle stage properties