Is Shell Closed

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More precisely a double dash is used in most Bash built in commands and many other commands to signify the end of command options after which only positional non option arguments are

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I understand the basic difference between an interactive shell and a non interactive shell But what exactly differentiates a login shell from a non login shell Can you give examples for uses of

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Lets say I SSH to my linux shell Inside it I want to run a program that will run for 8 hours I create a detached screen by entering screen and then crtl a crtl d to deattach it Then I run my

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I have a script that parses a rudimentary env file and exports its contents as environment variables before taking further action set eu test f env amp amp load dotenv exec foobar x y

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When it comes to shell scripts it s difficult to support both short options and long options I usually pick one or the other and use getopt or getopts as appropriate

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What can you do with the eval command Why is it useful Is it some kind of a built in function in bash There is no man page for it

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A shell is the generic name for any program that gives you a text interface to interact with the computer You type a command and the output is shown on screen Many shells have scripting abilities Put

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Windows explorer shell Windows 2 shell MS DOS exe

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You can run export with no arguments to see what environment variables are set in the current shell Remember that to make a shell variable available to the programs started by that shell