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Bash Expr Index Syntax Error

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asked 2 years ago viewed 2401 times active 2 years ago Linked 116 Why does my shell script choke on whitespace or other special characters? My girlfriend has mentioned disowning her 14 y/o transgender daughter What could cause the throttle to stick in my Ford Ranger? Activate Hearthstone season chest cards? Numeric expressions `expr' supports the usual numeric operators, in order of increasing precedence. http://sovidi.com/syntax-error/bash-expr-syntax-error.php

To make `expr' interpret keywords as strings, you must use the `quote' operator. Quotes seem to act differently in interactive shells compared to automated. just kidding. Tango Icons Tango Desktop Project.

Expr Syntax Error Length

Adv Reply June 19th, 2008 #4 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 share|improve this answer answered Aug 7 '14 at 23:22 val0x00ff 3,6671724 add a comment| up vote 0 down vote You need double quotes: IDX=`expr index "$OF" ' '` Without quotes, the To make `expr' interpret keywords as strings, you must use the `quote' operator. 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.

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How to do it? 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 Password Protected Wifi, page without HTTPS - why the data is send in clear text? Syntax expr expression expr option Options: --help Display help and exit --version output version information and exit Expressions: ARG1 | ARG2 ARG1 if it is neither null nor 0, otherwise ARG2

If either POSITION or LENGTH is negative, zero, or non-numeric, returns the null string. Expr Syntax Error In Shell Script i want to set the 2006 to a variable. This makes it possible to test `expr length quote "$x"' or `expr quote "$x" : '.*/\(.\)'' and have it do the right thing even if the value of $X happens to Operators can be given as infix symbols or prefix keywords.

  1. Mac OS X uses BSD expr which does not have the index command.
  2. Both arguments are coerced to numbers; an error occurs if this cannot be done. * / % Multiplication, division, remainder.
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Solaris Expr Substr Syntax Error

However, if you have pgrep` you better use pgrep. substr STRING POSITION LENGTH Returns the substring of STRING beginning at POSITION with length at most LENGTH. Expr Syntax Error Length Support Apple Support Communities Shop the Apple Online Store (1-800-MY-APPLE), visit an Apple Retail Store, or find a reseller. Mac Bash Expr 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

Roberts 1524 which OS du you use? http://sovidi.com/syntax-error/bash-if-syntax-error.php 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 The came be achieved with cut: echo "onetwothree" | cut -c 1-3 –kofemann Apr 20 '13 at 19:39 I am developing in OS X, Production is CentOS, cut worked! Join them; it only takes a minute: Sign up KornShell - expr index command not working up vote 1 down vote favorite I am trying to get the index of a Unix Shell Expr Index

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. How's the CMD trip bonuses from extra legs work? 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 this contact form This is the same as `STRING : REGEX'. `substr STRING POSITION LENGTH' Returns the substring of STRING beginning at POSITION with length at most LENGTH.

If the match fails, the `:' operator returns the null string if `\(' and `\)' are used in REGEX, otherwise 0. Bash Expr Index Example This operator is a GNU extension. All rights reserved.

Syntax expr expression...

Suggestions welcome. That also seems to be a strange use of the word "index." I would have expected it to find the index of a substring, which seems to be pretty common usage asked 2 years ago viewed 3058 times active 2 years ago Related 0Syntax error Using expr substr in bash script0unix expr: syntax error2Multiplication with expr in shell script0Error “expr: command not Expr Index Mac 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? of=$(ps fax | awk '/php-fmp: master process/{print $1}'). Meaning of Guns and ghee Can Customs make me go back to return my electronic equipment or is it a scam? navigate here All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.

Your version of expr does not appear to support the 'index' command, as is true (for example) of the version that ships with Mac OS X. –chepner Oct 2 '13 at 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. 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.

expr $fname : '.*/\(^.*\)' '^|' $fname An example showing that `\+' is an operator: expr aaa : 'a\+' => 3 expr abc : 'a\(.\)c' => b expr index abcdef cz => This discussion is locked Andreas Haselbacher Level 1 (5 points) Q: bash: "expr index string1 string2" gives "syntax error" In a bash script, I was trying to use the commandexpr index Browse other questions tagged bash shell shell-script or ask your own question. These are higher precedence than either the string or numeric operators (previous sections).

SunOS and other `expr''s treat these as regular characters. (POSIX allows either behavior.) `match STRING REGEX' An alternative way to do pattern matching.