Input output redirection linux
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Linux by default treats the keyboard as standard input and terminal screen as standard output and standard error. Input redirection uses the < symbol to redirect the input source from a file instead of the keyboard. Output redirection uses the > symbol to redirect output to a file instead of the terminal screen. Error redirection uses 2> to redirect error messages to a separate file.
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Input output redirection linux
- 1. 1 MCA 3rd SEMESTER ( Lateral Entry ) LINUX INPUT OUTPUT REDIRECTION SUBMITTED TO : - Mr. Adithya V. SUBMITTED BY : - Tanishq Soni
- 2. 2 Introduction Input – Output Redirection Redirection is a feature in Linux such that when executing a command, you can change the standard input/output devices. The basic workflow of any Linux command is that it takes an input and give an output. The standard input (stdin) device is the keyboard. The standard output (stdout) device is the screen.
- 3. 3 Linux treats the keyboard as the standard input (value 0) and terminal screen standard output (value 1) as well as standard error(value2). Redirection inputs: The < symbol is used to redirect inputs. Example $cat < file.txt File.txt takes input command cat. Redirecting Redirection outptuts: The > symbol is used to redirect outputs. $ ls >list.doc
- 4. 4 Redirecting errormessages: The ‘2>’ symbol is used to redirect error messages. Example : $cat 2> list1.doc If there is no file named list1.doc in the current directory then the error messages is sent to the standard error device.
- 5. THANK YOU 5