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Bash Script Syntax Error Operand Expected


Sign in to comment Contact GitHub API Training Shop Blog About © 2016 GitHub, Inc. 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, Between terminal window resizes, Bash ignores COLUMNS and LINES altogether. I indented the code and made verbose the variable names just for readability. this contact form

If you'd like to contribute content, let us know. Is it possible to check for existence of member template just by identifier? With Bash and Korn shell, it is generally not needed. Personal Open source Business Explore Sign up Sign in Pricing Blog Support Search GitHub This repository Watch 157 Star 3,438 Fork 804 rvm/rvm Code Issues 195 Pull requests 5 Projects 0

Bash Syntax Error Operand Expected (error Token Is )

Instead, as others have said, simply add the missing backquote where it was supposed to be. In this situation and many like it, the built-in ! Good way to explain fundamental theorem of arithmetic? How to make different social classes look quite different?

let also relaxes the normal rule of needing a $ in front of variables to be read. $ let z=5 $ echo $z 5 $ let z=$z+1 $ echo $z 6 Last edited by ta0kira; 08-14-2011 at 04:48 PM. The expanded contents are not expanded again. Syntax Error In Expression (error Token Is Anyway, when I start bash interactively, it says: Code: bash: ((: >= (13 + 1 + 11): syntax error: operand expected (error token is ">= (13 + 1 + 11)") bash:

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. Hot Network Questions My home country claims I am a dual national of another country, the country in question does not. Modern soldiers carry axes instead of combat knives. A name for a well-informed person who is not believed?

You could use 'eval', however with modern versions of 'bash' the cleanest way imho is via an array input=( "/tmp/dir1" "/tmp/dir2" "/tmp/dir3" ) for i in {0,1,2}; do echo "${input[i]}"; done Invalid Arithmetic Operator (error Token Is For more information, see Is it possible to build variable names from other variables in bash? American English: are [ə] and [ʌ] different phonemes? You can do whichever one you choose.

Syntax Error Operand Expected (error Token Is = )

Unix & Linux Stack Exchange works best with JavaScript enabled UbuntuCommunityAsk!DeveloperDesignDiscourseHardwareInsightsJujuShopMore ›AppsHelpForumLaunchpadMAASCanonical current community chat Ask Ubuntu Ask Ubuntu Meta your communities Sign up or log in to customize your list. 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 Bash Syntax Error Operand Expected (error Token Is ) But inside a $(( )) construct, one does not escape *. Bash Script Syntax Error Unexpected End Of File Will the medium be able to last 100 years?

If you need to reset your password, click here. weblink Problem? Sign up for free to join this conversation on GitHub. Skipping directly to level 4 Why can a Gnome grapple a Goliath? Bash (error Token Is ")

share|improve this answer answered Apr 9 '15 at 17:50 Rahul Gohrani 12 As written, that code contains a mistake and, at least in my version of bash, doesn't actually But you should probably consider anything starting with - as dangerous in case future bash versions add new options. Not the answer you're looking for? navigate here What does Sauron need with mithril?

If enabled, history expansion will be performed unless an ! Expr: Syntax Error Do COB LEDs usually need electrically insulating from the heatsink? MTK358 View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by MTK358 View Blog 08-14-2011, 02:37 PM #4 makyo Member Registered: Aug 2006

Why does bash think the file ends too soon, rather than the line?

Output with the --debug flag: Warning! Thus ${!s} is expanded to /tmp/dir1. Ask Ubuntu works best with JavaScript enabled Unix & Linux Forums > Top Forums > UNIX for Dummies Questions & Answers Member Name Remember Me? Bash Check If Variable Is A Number Single quotes for the assignment are best if you want to prevent all expansion there: INPUT1=/tmp/dir1 → INPUT1='/tmp/dir with spaces' (Only a ' quote character is treated specially, as it will

Kevin Barry ta0kira View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by ta0kira 08-14-2011, 02:52 PM #6 MTK358 LQ 5k Club Religious supervisor wants to thank god in the acknowledgements Subtraction with a negative result How does Gandalf get informed of Bilbo's 111st birthday party? Your script revised using better modern bash practice: #!/bin/bash k=0 #this loop is just for being sure array is loaded while ((k<=${#hitEnd[@]})); do echo "hitEnd is: ${hitEnd[k]} and hitStart is: ${hitStart[k]}" his comment is here Please visit this page to clear all LQ-related cookies.

Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the Note that I've removed the awk command, as it (a) isn't necessary for the test and (b) actually defeats the test in that it will cause the overall result to be Single quotes postpone the evaluation of $(create-prompt-infobar) until the prompt is printed. In a GNU C macro envSet(name), what does (void) "" name mean?

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