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Syntax Error Operand Expected


bash unix share|improve this question asked Nov 24 '13 at 16:03 shoham 3422417 Why the downvote? –Blue Ice Nov 24 '13 at 16:27 Check also the -gt Help my maniacal wife decorate our christmas tree Positivity of certain Fourier transform VT-x is not available, but is enabled in BIOS Is there a performance difference in the 2 temp What are the ground and flight requirements for high performance endorsement? Outlet w/3 neutrals, 3 hots, 1 ground? http://allconverter.net/syntax-error/syntax-error-value-expected-c.html

EOF stands for end-of-file and it means there are no more data available to read--in this case, text for the bash interpreter to read. Am I being a "mean" instructor, denying an extension on a take home exam Display a Digital Clock Does enlarging a character with a reach weapon affect his threat range? asked 2 years ago viewed 1480 times active 2 years ago Related 2bash script error let: -: syntax error: operand expected (error token is “-”)5Syntax error: operand expected (error token is Don't you mean this instead? #!/bin/bash # define arrays hitStart[@] and hitEnd[@]... # define array array[@] #this loop is just for being sure array is loaded for ((k=0;k<${#hitEnd[@]};++k)); do echo "hitEnd

Bash (error Token Is "<= ")

where am I wrong? # as gniourf_gniourf answered: "... Joining two lists with relational operators An electronics company produces devices that work properly 95% of the time How do I reassure myself that I am a worthy candidate for a Hot Network Questions Unable to understand the details of step-down voltage regulator Why are terminal consoles still used? However, the more interesting aspect of this question is why do you get that error message?

How to reward good players, in order to teach other players by example Change syntax of macro, to go inside braces Is the partition function of non-conformal theories on a torus An electronics company produces devices that work properly 95% of the time Can a free radical be created by chemical reaction of non-radical species? Success! Arithmetic In Bash Neither form of let, supports floating point numbers.

An electronics company produces devices that work properly 95% of the time How secure is a fingerprint sensor versus a standard password? Let: Syntax Error For details type `warranty'. 3 + 2 5 obase=2 12 1100 Remember to type cntrl-d (EOF) to exit from interactive mode. $r=3.5 $s=`echo "$r + 2.2" | bc` $echo $s This form is more forgiving about spaces. $ ((e=5)) $ echo $e 5 $ (( e = e + 3 )) $ echo $e 8 $ (( e=e+4 )) # -- At some point, k will reach the value ${#hitEnd[@]}, and this is exactly when hitEnd[k] is not defined and expands to an empty string!

Idiomatic Expression that basically says "What's bad for you is good for me" How many times do you need to beat mom and Satan etc to 100% the game? Integer Expression Expected Similarly, it is required to pass the closing ] of a [ command as a separate command-line argument. This is because each number and arithmetic operator must be passed as a separate command-line argument to expr: [email protected]:~$ expr 1+1 1+1 [email protected]:~$ expr 1 + 1 2 To fix this With Bash and Korn shell, it is generally not needed.

Let: Syntax Error

Code: # Test if var is above 5 if (( "$var" > "$a" )); then echo "test failed" # Var is higher than 5 exit $ER_AF has to be Code: # 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 Bash (error Token Is "<= ") Word for nemesis that does not refer to a person how to match everything between a string and before next space Ordering a bulky item in the USA What are some Syntax Error In Expression (error Token Is How to write an effective but very gentle reminder email to supervisor to check the Manuscript?

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed this content Why doesn't the expr utility know 1+1 is supposed to be interpreted as an integer, the sum of 1 and 1? Help my maniacal wife decorate our christmas tree Is it unethical to take a photograph of my question sheets from a sit-down exam I've just finished if I am not allowed Cloud Data Center Midsize & Enterprise Less than 100 Employees Home Office/Consumer PRODUCTS NEXT GENERATION THREAT PREVENTION SandBlast Zero-Day Protection Threat Prevention Appliances & Software Threat Intelligence Web Security DDOS Protection Syntax Error Invalid Arithmetic Operator Error Token Is

Just next time, write an actual question and use a more descriptive title. How do I reassure myself that I am a worthy candidate for a tenure-track position, when department would likely have interviewed me even if I wasn't? Requirements installation successful. % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 50 0 50 0 0 46 0 --:--:-- 0:00:01 weblink Instead of a while loop, why not a for loop?

Display a Digital Clock Does enlarging a character with a reach weapon affect his threat range? Expr Syntax Error To check if the input is a positive integer (only unsigned digits) you can use this awesome bash regex: [[ "$number" =~ ^[0-9]+$ ]] that checks if $numbercontains only digits. Since it is a command, command substitution is needed.

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linux bash for-loop share|improve this question edited Dec 2 '12 at 19:08 asked Dec 2 '12 at 17:52 teutara 3671722 add a comment| 2 Answers 2 active oldest votes up vote Browse other questions tagged linux bash for-loop or ask your own question. ruby-2.1.2 - install ruby-2.1.2 - #already removed src/ruby-2.1.2 ruby-2.1.2 - #already removed rubies/ruby-2.1.2 Searching for binary rubies, this might take some time. Bash String To Int Joining two lists with relational operators Schengen visa to Norway to visit my wife refused Why is the Vitamin B complex, a "complex"?

Why does bash think the file ends too soon, rather than the line? But when I run the script, it outputs an error: l<=: syntax error: operand expected (error token is "<=" I consulted the mighty Google and I understood it suffers from the Letter of Recommendation Without Contact from the Student Aligning texts side by side with equations in \align environment Plus and Times, Ones and Nines An electronics company produces devices that work check over here SYNOPSIS bc bc EXPRESSION Here are some examples: $ bc bc 1.06 Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc.

However, it is possible to do math with shell script. Instead prefer $(). asked 1 year ago viewed 1004 times active 1 year ago Related 2bash script error let: -: syntax error: operand expected (error token is “-”)5Syntax error: operand expected (error token is Copyright | Privacy Policy | Site Map Navigation index next | previous | Introduction to Unix Study Guide » BASH (Bourne Again Shell) » Introduction to Unix Math in Shell Scripts¶

Reload to refresh your session. UPDATE: The reason for not using is mostly because they are easier to miss. –tusharkant15 Apr 9 '15 at 16:37 | show 9 more comments 4 Answers 4 active oldest votes You have *\ in an expression for arithmetic expansion, which yields the error bash: n *\ temp: syntax error: operand expected (error token is "\ temp"). The error suggests that this is something to do with $var not being an integer number.

Not the answer you're looking for? Try our newsletter Sign up for our newsletter and get our top new questions delivered to your inbox (see an example). I construct those properly and before going into for loop, I do echo them to be sure everything is ok with arrays. Blank space must appear between it and its first argument.

expr became popular in the days of the Bourne Shell, which did not support math. asked 1 year ago viewed 2506 times active 3 months ago Related 0why syntax error near unexpected token ' fi '1“syntax error: unexpected end of file” simple script0Bash script throws “syntax You signed in with another tab or window.