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Bash Script Syntax Error Operand Expected


The line if [ "$num" -ge 0]; then should thus be rewritten to say: if [ "$num" -ge 0 ]; then For more details on [ syntax, see the output of 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 If enabled, history expansion will be performed unless an ! However, the more interesting aspect of this question is why do you get that error message? his comment is here

There is an option for 'shopt' (checkwinsize) which, if set, is supposed to update COLUMNS and LINES after each command. Maybe a typo crept in somewhere earlier in your script? Anyway, when I start bash interactively, it says: Code: bash: ((: >= (13 + 1 + 11): syntax error: operand expected (error token is ">= (13 + 1 + 11)") bash: A double quote may be quoted within double quotes by preceding it with a backslash.

Bash Syntax Error Operand Expected (error Token Is )

Contact Us - Advertising Info - Rules - LQ Merchandise - Donations - Contributing Member - LQ Sitemap - Main Menu Linux Forum Android Forum Chrome OS Forum Search LQ Bang!" meaning error output is displayed not at the beginning of the loop, but when k has a greater value than array's indices, pointing an index that array does not include... asked 1 year ago viewed 2012 times active 1 month ago Related 0why syntax error near unexpected token ' fi '1“syntax error: unexpected end of file” simple script0How do I solve

Found remote file https://rvm.io/binaries/ubuntu/14.04/x86_64/ruby-2.0.0-p481.tar.bz2 rvm_autolibs_flag=4 Checking requirements for ubuntu. Thanks. let array[l]++ k=$((k+1)) done The variables in the for loop are echoed correctly but for loop won't work.. Syntax Error In Expression (error Token Is Not the answer you're looking for?

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 Syntax Error Operand Expected (error Token Is = ) What are the holes on the sides of a computer case frame for? Similarly, it is required to pass the closing ] of a [ command as a separate command-line argument. Please check. –Rahul Gohrani Apr 9 '15 at 17:01 I updated my post, please check ;-) –Helio Apr 9 '15 at 17:39 I shall check this.

Realism of a setting with several sapient anthropomorphic animal species American English: are [ə] and [ʌ] different phonemes? Invalid Arithmetic Operator (error Token Is Maybe you can Code: grep 'COLUMNS' all the scripts and check each line for errors. Here is what happens when we try to do floating point math with the shell: $let r=3.5 -bash: let: r=3.5: syntax error in expression (error token is ".5") $(( r = Are you using a pipe somewhere during the assignment process?

Syntax Error Operand Expected (error Token Is = )

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 I get the same error with ((l<=)). Bash Syntax Error Operand Expected (error Token Is ) Introduction to Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started Bash Script Syntax Error Unexpected End Of File declare¶ You may recall, that when the text book introduced the declare statement, it said that it is not always needed.

It appears your intent is to escape the * character so it is not treated specially by the shell before being subjected to arithmetic expansion. this content Why does bash think the file ends too soon, rather than the line? However, it is strange that it works now. Visit the following links: Site Howto | Site FAQ | Sitemap | Register Now If you have any problems with the registration process or your account login, please contact us. Bash (error Token Is ")

Unexpected parent process id in output How would family relationships change if legal system uses collective punishment? But these answers do not directly answer the question as stated, so I'll do that: Here is how you can do that with eval to access the variables, following closely the 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? weblink However, if they can still be set to some false value.

The best solution I could find until now is to use 'tput' to get the size of the terminal. Expr: Syntax Error requirements code for ubuntu loaded Found required packages: bash, curl, patch, bzip2, ca-certificates, gawk, g++, gcc, make, libc6-dev, >patch, openssl, ca-certificates, libreadline6, libreadline6-dev, curl, zlib1g, zlib1g-dev, libssl-dev, >libyaml-dev, libsqlite3-dev, sqlite3, autoconf, share|improve this answer answered Oct 30 '14 at 11:56 jimmij 20k64267 BTW, you can omit $ inside parentheses: echo $((x+y)) –jimmij Oct 30 '14 at 12:04 why

asked 2 years ago viewed 21117 times active 10 months ago Linked 0 syntax error: operand expected (error token is “- ”) Related 2bash script error let: -: syntax error: operand

For more information, see Is it possible to build variable names from other variables in bash? Natural construction Least Common Multiple Dennis numbers 2.0 more hot questions question feed about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback I'm aware of the difference between ' and ", but if you want create-prompt-infobar to be evaluated every time the prompt comes up it needs to be in single quotes. Bash Check If Variable Is A Number cheers, makyo makyo View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by makyo 08-14-2011, 02:46 PM #5 ta0kira Senior Member Registered:

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 This is because echo prints a single space between each echoed argument. The error suggests that this is something to do with $var not being an integer number. check over here Please explain the local library system in London, England Are there any 'smart' ejection seats?

Created using Sphinx 1.4.4. As you can see, it is picky about spaces. $ z=5 $ z=`expr $z+1` ---- Need spaces around + sign. $ echo $z 5+1 $ z=`expr $z + 1` $ echo American English: are [ə] and [ʌ] different phonemes? This is free software with ABSOLUTELY NO WARRANTY.

Can filling up a 75 gallon water heater tank without opening a faucet cause damage? My home country claims I am a dual national of another country, the country in question does not. Is there any corrections need to be done at point where variable $BACKUP_DRIVE mentioned? This is not merely a matter of idle curiosity--understanding that helps you comprehend this and other error messages in the future.

This kind of parameter expansion is called indirect expansion. Note As we will see, some of the commands used to facilitate math are a little picky about things like spaces around operators. 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 Password Programming This forum is for all programming questions.

INPUT1=/tmp/dir1 INPUT2=/tmp/dir2 INPUT3=/tmp/dir3 for i in 1 2 3 do echo $(INPUT$i) done When I run this script, tho output is: syntax error: operand expected (error token is "/tmp/dir1 bash scripts