INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT International Peer Reviewed & Refereed Journals, Open Access Journal ISSN Approved Journal No: 2456-4184 | Impact factor: 8.76 | ESTD Year: 2016
Scholarly open access journals, Peer-reviewed, and Refereed Journals, Impact factor 8.76 (Calculate by google scholar and Semantic Scholar | AI-Powered Research Tool) , Multidisciplinary, Monthly, Indexing in all major database & Metadata, Citation Generator, Digital Object Identifier(DOI)
: In its simplest of forms a variable is a placeholder that holds value in computer memory. This value can be a number, text or filename/directory. In the previous unit we have discussed the concept of shell; a shell is an interface between the kernel and the user. We can also say that a shell is a command interpreter, which processes commands entered by user on the command line. In UNIX a shell allows a user to create, assign or delete variables. However, variables are temporary which means they are automatically deleted when the shell session is closed. These types of variables which are available only to the current shell are known as shell variables. If we want to make a shell variable persistent, we have to use the concept of environment variable.
"INTRODUCTION TO SHELL SCRIPTING", International Journal of Novel Research and Development (www.ijnrd.org), ISSN:2456-4184, Vol.8, Issue 4, page no.a743-a757, April-2023, Available :http://www.ijnrd.org/papers/IJNRD2304097.pdf
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2456-4184 | IMPACT FACTOR: 8.76 Calculated By Google Scholar| ESTD YEAR: 2016
An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 8.76 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator
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