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Jun 01, 2011 In “/dev/null 2&1”, it’s been redirected to /dev/null. There is second part (i.e. 2&1) which redirects 2 into &1. To understand “2&1”, it’s necessary to understand standard in, standard out and standard error, the three standard sources of input. /path/to/program arg1 arg2 /dev/null 2 /dev/null The syntax 2&1 means 'Send output currently going to file descriptor 2 to the same place that output going to file descriptor 1 is going to'. is omitting the default of FD1, so it is semantically the same as 1, which might make 2 make more sense. Nov 07, 2014 nohup.c. GitHub Gist: instantly share code, notes, and snippets. Can my c program be present in a string which i then compile using gcc by redirecting its input from a file to the string. Likewise, can i redirect the output of my c program to a string instead of stdout or any other file before.
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2&1 Dev Null
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Learn how to use shell features to make your work faster and easier. All of the features covered in this chapter work with both bash and tcsh.
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* See informit.com/terms Linux Dev NullThis chapter is from the book Cannot Redirect Standard Input From /dev/null No Such File Or Directory
Practical Guide to Linux Commands, Editors, and Shell Programming, A, 4th Edition
This chapter is from the bookThis chapter is from the book
Practical Guide to Linux Commands, Editors, and Shell Programming, A, 4th Edition
Linux Shell FeaturesObjectives
After reading this chapter you should be able to:
This chapter takes a close look at the shell and explains how to use some of its features. It discusses command-line syntax and describes how the shell processes a command line and initiates execution of a program. Hypersonic 1.12 vst download. This chapter also explains how to redirect input to and output from a command, construct pipelines and filters on the command line, and run a command in the background. The final section covers filename expansion and explains how you can use this feature in your everyday work.
Except as noted, everything in this chapter applies to the Bourne Again (bash) and TC (tcsh) Shells. The exact wording of the shell output differs from shell to shell: What the shell you are using displays might differ slightly from what appears in this book. For shell-specific information, refer to Chapters 8 (bash) and 9 (tcsh). Chapter 10 covers writing and executing bash shell scripts.
Related ResourcesHow To Redirect Standard Output To /dev/null
Standard Input Redirect From Dev Null C Programming
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