Itchy Feet After Hot Tub I m trying to learn shell scripting and I need to understand someone else s code What is the variable hold I can t Google search the answer because they block punctuation characters
Dec 14 2024 nbsp 0183 32 Shell quot Shell quot is a program which facilitates the interaction between the user and the operating system kernel There are many shell implementations available like sh Bash Feb 20 2011 nbsp 0183 32 When going through one shell script I saw the term quot quot What is the significance of this term
Itchy Feet After Hot Tub
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command is command substitution As you seem to understand it runs the command captures its output and inserts that into the command line that contains the e g ls ld Shell equality operators eq Asked 11 years 6 months ago Modified 3 years 1 month ago Viewed 632k times
BTW in bash a semi colon is a statement separator not a statement terminator which is a new line So if you only have one statement on a line then the at end of line are superfluous Not 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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Mar 1 2022 nbsp 0183 32 The question asks how to check if a variable is an empty string and the best answers are already given for that But I landed here after a period passed programming in 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 quot non option quot
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