expr syntax error Eskridge Kansas

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expr syntax error Eskridge, Kansas

I also don't see how this is an Ubuntu issue, as it's a pure generic coding question and belongs on Stack Overflow, not here. –Thomas Ward♦ Apr 9 '15 at 16:01 I submitted an answer as well. –Rahul Gohrani Apr 9 '15 at 17:52 Please check mine, I think that will help you to make a clean code. –Helio Apr Just next time, write an actual question and use a more descriptive title. Ask Ubuntu works best with JavaScript enabled The request cannot be fulfilled by the server Skip to Main Content Search Help Tips Dictionary History Forums Contact You are here: Help >

make it easier to read.. The source files reside in 4 different sub-folders under the same root folder. And what about "double-click"? Is the mass of an individual star almost constant throughout its life?

share|improve this answer answered Oct 30 '10 at 20:36 msw 7,5701829 add a comment| up vote 2 down vote For your example with parens, you must escape them too: expr \( If you know you have gnu dc available the more concise a=`dc -e "$precision k $var1 $var2 * $var3 /p"` can be used. Similarly, it is required to pass the closing ] of a [ command as a separate command-line argument. Browse other questions tagged bash expr or ask your own question.

shell share|improve this question edited Oct 29 '11 at 4:13 John 2001310 asked Oct 30 '10 at 20:09 3sdmx 12114 What errors are you getting? bash has a amazing arithmetic expansion share|improve this answer edited Apr 9 '15 at 17:51 answered Apr 9 '15 at 16:25 Helio 2,69931640 I have updated the new script. Join our community today! If you'd like to contribute content, let us know.

At first I was afraid I'd be petrified Near Earth vs Newtonian gravitational potential Can an ATCo refuse to give service to an aircraft based on moral grounds? Otherwise, the result will be 0. It also prevents errors like this: Code: # Didn't recognise variable fred="abc" echo $fred42 sh: fred42: Parameter not set. # Spaces disappeared fred="abc" echo ${fred}42 displaced abc42 displaced # All working expr examples expr text : '.*' Performs a regular expression match.

Showing results for  Search instead for  Do you mean  Menu Categories Solutions IT Transformation Internet of Things Topics Big Data Cloud Security Infrastructure Strategy and Technology Products Cloud Integrated Systems Networking This site is not affiliated with Linus Torvalds or The Open Group in any way. And what about "double-click"? Truth in numbers Which option did Harry Potter pick for the knight bus?

Main Menu LQ Calendar LQ Rules LQ Sitemap Site FAQ View New Posts View Latest Posts Zero Reply Threads LQ Wiki Most Wanted Jeremy's Blog Report LQ Bug Syndicate Latest Anyway, if the answer solved your issue, please accept it and then ask a new one for the next error. –terdon♦ Apr 9 '15 at 16:10 1 Just a suggestion, For Example: #!/bin/bash #The following line will print no of argument provided to script #echo $# USAGE="$0 --arg1 --arg2" if [ "$#" -lt "4" ] then echo -e $USAGE; else var1=$2; So if it's just us, seems like an awful waste of space, right?

ARG1 = ARG2 ARG1 is equal to ARG2. up vote -2 down vote favorite When running the script below, I get an error: The script is: clear echo "Enter a num" read num if [ "$num" -ge 0]; then The time now is 05:43 AM. So the value 5 is equivalent to a string containing the number "5".

The question does not have to be directly related to Linux and any language is fair game. As this variable is not numeric anymore, the test operator "[" returns an error as it is comparing a non numeric variable using the numeric comparator "-lt". They all relate to command-line syntax, most for bash, but in one case for the separate expr utility. Instead of a while loop, why not a for loop?

ARG1 & ARG2 ARG1 if neither argument is null or 0, otherwise 0. Is it "eĉ ne" or "ne eĉ"? In summary: The original problem related to an unmatched ` in a backquote expression (and more generally, how to close a backquote expression and how newlines inside backquote expressions are handled Physically locating the server A better way to evaluate a certain determinant What are "desires of the flesh"?

So even if you had escaped in the usually correct manner (\*, not *\), you'd get an error. In nomenclature, does double or triple bond have higher priority? I am using the bash shell. ARG1 % ARG2 arithmetic remainder of ARG1 divided by ARG2.

Other syntax errors preventing your script from working properly relate to argument parsing in the [ construct and the expr command. let allows you to assign variables values but does not return that value so cannot be used with echo or assigned to a variable, unlike both expr and $(()) which both ARG1 - ARG2 arithmetic difference of ARG1 and ARG2. share|improve this answer edited Aug 31 '14 at 8:29 answered Aug 30 '14 at 23:10 Tom Fenech 38.5k53063 add a comment| Your Answer draft saved draft discarded Sign up or

That works in bash at least –Michael Mrozek♦ Oct 30 '10 at 20:20 expr: syntax error –3sdmx Oct 30 '10 at 20:21 add a comment| 2 Answers 2 active Expressions expr prints the value of EXPRESSION to standard output. ARG1 != ARG2 ARG1 is unequal to ARG2. Ferguson Acclaimed Contributor [Founder] Options Mark as New Bookmark Subscribe Subscribe to RSS Feed Highlight Print Email to a Friend Report Inappropriate Content ‎03-01-2007 11:47 PM ‎03-01-2007 11:47 PM Re: expr:

How would you help a snapping turtle cross the road? Then what you intended as the contents of the second backquote expression it sees outside of backquotes, and sees the following as a second backquote expression: ` done echo "The factorial Is there any job that can't be automated? Here, the values 5 and 5 are equal, and therefore equivalent, so the output will be: 1 expr '5' = '5' Here, two strings are being compared for equivalence.

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