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Bash Expr Syntax Error


Rosa Parks is a [symbol?] for the civil rights movement? Force Microsoft Word to NEVER auto-capitalize the name of my company Can Customs make me go back to return my electronic equipment or is it a scam? I cannot recall the last time something like that happened in politics or religion.-- Carl Sagan, 1987 CSICOP keynote address Helpful (0) Reply options Link to this post This site contains How to increase the population growth of the human race Were slings used for throwing hand grenades? http://waspsoft.com/syntax-error/bash-script-expr-syntax-error.html

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Expr Index Syntax Error

make it easier to read.. 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, Instead of a while loop, why not a for loop? Browse other questions tagged shell or ask your own question.

  1. Roberts Apr 20 '13 at 20:37 Id love to know why this was down voted –Jeffrey L.
  2. I am using the bash shell.
  3. 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 $(()) which both
  4. bash expr share|improve this question edited May 28 '15 at 4:08 Avinash Raj 126k84883 asked May 28 '15 at 4:08 Robo Smith 61 r=$(expr $a % 10) –Avinash Raj
  5. Yes, of course I'm an adult!
  6. up vote -2 down vote favorite When running the script below, I get an error: The script is: clear echo "Enter a num" read num if [ "$num" -ge 0]; then
  7. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.
  8. Did Donald Trump call Alicia Machado "Miss Piggy" and "Miss Housekeeping"?
  9. Dennis numbers 2.0 Will the medium be able to last 100 years?
  10. That is, you must have blank space before the trailing ] as well as after the leading [.

Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. Meaning of "soul-sapping" Problem with using pause and onslide in one frame How to deal with a really persuasive character? echo "${filename}" I have got into the habit of always putting quotes round string variables and strings because it prevents so many silly errors when a value contains spaces. Expr Length Syntax Error It's more readable and shortens the code.

Reading the man page, I realized expr does something quite different on OS X than on Linux. Andreas Helpful (0) Reply options Link to this post by Gary Kerbaugh, Gary Kerbaugh Apr 11, 2007 6:58 PM in response to LittleSaint Level 6 (18,040 points) Apr 11, 2007 6:58 You should also mention the shell you're using (usually bash). Do you want to help us debug the posting issues ? < is the place to report it, thanks !

Adv Reply June 19th, 2008 #2 pedro_orange View Profile View Forum Posts Private Message Extra Foam Sugar Free Ubuntu Join Date Nov 2007 Location UK Beans 772 DistroUbuntu 8.04 Hardy Bash Expr Example Is there a good way to get from Levoča to Lviv? Is there a way to make a metal sword resistant to lava? In a GNU C macro envSet(name), what does (void) "" name mean?

Mac Expr Syntax Error

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 Find More Posts by baosheng 06-09-2005, 03:32 PM #5 osvaldomarques Member Registered: Jul 2004 Location: Rio de Janeiro - Brazil Distribution: Conectiva 10 - Conectiva 8 - Slackware 9 Expr Index Syntax Error The Original EOF in backquote substitution Error As Florian Diesch says (and in Helio's answer also), the original problem was a missing ` at the end of the first backquoted expr Math Shell Script How to indicate you are going straight?

Quote: act_rec_count=`expr ${tot_rec_count} - 1` In ksh and Posix Shell whatever is between backticks is to be executed. weblink It's because they can't figure out how to get thelittle bottles into the typewriter. Not the answer you're looking for? Join them; it only takes a minute: Sign up Syntax error expr up vote 2 down vote favorite Why does the following returning a syntax error: stringZ=abcABC123ABCabc echo `expr match "$stringZ" Expr Syntax Error Multiplication

If you'd like to contribute content, let us know. Train ride from Copenhagen to Malmo Limit involving exponentials and arctangent without L'Hôpital Is this safe to display MySQL query error in webpage if something went wrong? 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 http://waspsoft.com/syntax-error/bash-expr-substr-syntax-error.html And use indentation. –muru Apr 9 '15 at 16:02 2 I'm voting to close this question as off-topic because problems due to typos are hardly useful. –muru Apr 9 '15

You could install/compile GNU expr or use this:echo string1 | sed -n "s/[string2].*//p" | wc -cNote the double quotes in the sed statement otherwise string2 will not be expanded. Bash Expr Float My number is correct for the bash index of a character in a character array. Yes, of course I'm an adult!

In bash, [ is a command (and in fact there is even a separate [ executable, as unlike bash some shells don't provide a [ builtin).

Rosa Parks is a [symbol?] for the civil rights movement? just kidding. 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 Bash Expr Division By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features.

Blogs Recent Entries Best Entries Best Blogs Blog List Search Blogs Home Forums HCL Reviews Tutorials Articles Register Search Search Forums Advanced Search Search Tags Search LQ Wiki Search Tutorials/Articles Search My home country claims I am a dual national of another country, the country in question does not. If capturing groups are used, each group will be stored as a separate element in the array. http://waspsoft.com/syntax-error/bash-expr-index-syntax-error.html Posted on Apr 11, 2007 2:06 PM See the answer in context Close Q: bash: "expr index string1 string2" gives "syntax error" All replies Helpful answers by LittleSaint,Solvedanswer LittleSaint Apr 11,

EOF is not inherently an error condition, but when an EOF is an error it usually means the interpreter thinks your program has ended prematurely--it was anticipating something, which never occurred Natural construction How's the CMD trip bonuses from extra legs work? A name for a well-informed person who is not believed? Unix & Linux Stack Exchange works best with JavaScript enabled Unix & Linux Forums > Top Forums > Shell Programming and Scripting Member Name Remember Me?

share|improve this answer answered Oct 31 '10 at 6:44 alex 3,16931623 getcombination() { tempres=1 a=expr \( $2 - $1 \) + 1 b=1 while [ a -le $2 -a Why doesn't the expr utility know 1+1 is supposed to be interpreted as an integer, the sum of 1 and 1? more hot questions question feed lang-sh about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation 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

Now I know my ABCs, won't you come and golf with me? Why to call expr to handle integers? What type of sequences are escape sequences starting with "\033]" Do COB LEDs usually need electrically insulating from the heatsink? Good way to explain fundamental theorem of arithmetic?

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