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Bash Expr Index Syntax Error


Do COB LEDs usually need electrically insulating from the heatsink? In the regular expression, `\+', `\?', and `\|' are operators which respectively match one or more, zero or one, or separate alternatives. Roberts Apr 20 '13 at 20:37 Id love to know why this was down voted –Jeffrey L. The time now is 01:22 AM. this contact form

These have lower precedence than both the numeric and relational operators (in the next sections). `STRING : REGEX' Perform pattern matching. My number is correct for the bash index of a character in a character array. 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 Not the answer you're looking for?

Expr Syntax Error Length

Remove advertisements Sponsored Links Dhruva View Public Profile Find all posts by Dhruva #5 07-27-2006 Shivdatta Registered User Join Date: Mar 2006 Last Activity: 7 January 2015, 3:22 Realism of a setting with several sapient anthropomorphic animal species Is this safe to display MySQL query error in webpage if something went wrong? Helpful (0) Reply options Link to this post by Gary Kerbaugh, Gary Kerbaugh Apr 12, 2007 6:41 PM in response to Ken Nellis Level 6 (18,040 points) Apr 12, 2007 6:41 Since your question is not clear, I'm not sure what expr is doing there.

The Woz Monitor Is my workplace warning for texting my boss's private phone at night justified? 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 Helpful (0) Reply options Link to this post by Ken Nellis, Ken Nellis Apr 12, 2007 4:57 PM in response to Gary Kerbaugh Level 2 (263 points) Mac OS X Apr Expr Syntax Error Multiplication I would have pulled an Indiana Jones and whipped out awk.

The string operators (previous section) have lower precedence, the connectives (next section) have higher. `+ -' Addition and subtraction. Solaris Expr Substr Syntax Error Basically what i want to do, is to extract the prefix when given a string in the format "prefix_filename". Problem? This is the same as STRING : REGEX.

why? Expr Syntax Error In Shell Script quote TOKEN Interpret TOKEN as a string, even if it is a keyword like MATCH or an operator like /. I'm sorry for going on too much but such things matter more than machines.On the other hand, you're a royal pain in the ... and so ...

Solaris Expr Substr Syntax Error

How to indicate you are going straight? 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, Expr Syntax Error Length Also, have tried putting ' quotes around the $OF variable to no avail. Mac Bash Expr I can't seem to figure out what the problem is.

So sed was my next choice. weblink echo prefix_therest | gawk -F_ '{print $1}' or prefix=$(echo $filename | gawk -F_ '{print $1}') Report this message #4: Re: Syntax error on Bash shell Posted on 2005-08-30 11:17:47 by RolandRB If capturing groups are used, each group will be stored as a separate element in the array. Comparisons are arithmetic if both ARGs are numbers, else lexicographical. Unix Shell Expr Index

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  • Please let me know if there is any other syntax/alternative way to achieve this.
  • On newer bash you may prefer to use the more modern regular expression syntax: re='abc[A-Z]*.2' [[ $stringZ =~ $re ]] && echo ${#BASH_REMATCH} The =~ operator is available since bash version
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  • The results of the $OF variable are: 27797 27495 What is the error here?
  • Also Explain in details what you want. –val0x00ff Aug 7 '14 at 23:07 add a comment| 2 Answers 2 active oldest votes up vote 0 down vote accepted You should use
  • Browse other questions tagged bash scripting shell-scripting or ask your own question.

bash expr share|improve this question asked Aug 30 '14 at 23:00 rudolph9 4,00073163 Have you tried using echo $(expr match "$stringZ" 'abc[A-Z]*.2')? –Tom Fenech Aug 30 '14 at 23:04 They really do it. But it happens every day. http://waspsoft.com/syntax-error/bash-script-expr-syntax-error.html My girlfriend has mentioned disowning her 14 y/o transgender daughter What could cause the throttle to stick in my Ford Ranger?

Numeric expressions `expr' supports the usual numeric operators, in order of increasing precedence. Bash Expr Index Example I had had a tough day too. It is disabled when the environment variable `POSIXLY_CORRECT' is set.

Operators may given as infix symbols or prefix keywords.

With bash (or other POSIX shell) you don't need an external command: PREFIX=${FILENAME%_*} -- Chris F.A. How's the CMD trip bonuses from extra legs work? Then change my command to:echo $((${#test%%[cb]*} + 1))I guess I need expr. Expr Index Mac However, mathematically it isn't too difficult; you just have to use modular arithmetic.

Aug 8 '14 at 0:07 This question was marked as an exact duplicate of an existing question. 1 You can change the first line to. 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. Relations for `expr' `expr' supports the usual logical connectives and relations. http://waspsoft.com/syntax-error/bash-expr-substr-syntax-error.html I apologize.

If the match fails, the `:' operator returns the null string if `\(' and `\)' are used in REGEX, otherwise 0. Operands are either numbers or strings. `expr' coerces anything appearing in an operand position to an integer or a string depending on the operation being applied to it. Strings are not quoted for `expr' itself, though you might need to quote them to protect characters with special meaning to the shell, e.g., spaces. Roberts Apr 22 '13 at 17:43 add a comment| 1 Answer 1 active oldest votes up vote 1 down vote accepted The substr operation is a non standard extension and not

Tango Icons Tango Desktop Project. Limit involving exponentials and arctangent without L'Hôpital Finding a file starting with '-' dash Least Common Multiple Can Customs make me go back to return my electronic equipment or is it asked 3 years ago viewed 984 times active 2 years ago Linked 24 Position of a string within a string using Linux shell script? The : syntax works on my OSX 10.9.4 machine (which has bash 3.2.51, not very current): echo `expr "$stringZ" : 'abc[A-Z]*.2'` share|improve this answer answered Aug 30 '14 at 23:08 Wm

Let me point out that your zsh script isn't quite right yet. Here is the list, lowest-precedence operator first. | Returns its first argument if that is neither null nor 0, otherwise its second argument. & Return its first argument if neither argument Which requires more energy: walking 1 km or cycling 1 km at the same speed? The difference between the two answers is just the flow of karma but stopping the flow of negative by saying something is a real and difficult choice and yours shows character.

A blank line below separates increasing precedence groups. shell unix scripting ksh share|improve this question edited Jan 3 '14 at 23:52 javaPlease42 1,1881233 asked Oct 2 '13 at 18:18 user2839824 62 possible duplicate of Position of a Is it possible to check for existence of member template just by identifier? The same be achieved with cut: echo "onetwothree" | cut -c 1-3 share|improve this answer edited Nov 25 '15 at 14:51 answered Apr 21 '13 at 7:02 kofemann 1,418817 add a

Operators can be given as infix symbols or prefix keywords. Forum Operations by The UNIX and Linux Forums Search queries Warning: mysqli_select_db() expects exactly 2 parameters, 1 given in, Parameter für CSV-Import: Zeilen enden mit, xxxdbh, select from where order by of=$(ps fax | awk '/php-fmp: master process/{print $1}'). It's because they can't figure out how to get thelittle bottles into the typewriter.