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Bash Expr Substr Syntax Error


Helpful (0) Reply options Link to this post by Gary Kerbaugh, Gary Kerbaugh Apr 11, 2007 9:33 PM in response to LittleSaint Level 6 (18,040 points) Apr 11, 2007 9:33 PM Why? Adopt A Jet/Book How to deal with a really persuasive character? Not the answer you're looking for? http://sovidi.com/syntax-error/bash-expr-syntax-error.php

ARG1 <= ARG2 ARG1 is less than or equal to ARG2. Examples # A partial match will return the number of characters that match: $ expr ss64 : ss6 3 # The condition in string 2 must entirely match string 1 $ All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use. Browse other questions tagged bash expr or ask your own question.

Expr Index Syntax Error

ARG1 / ARG2 arithmetic quotient of ARG1 divided by ARG2. Mac OS X uses BSD expr which does not have the index command. Browse other questions tagged bash scripting shell-scripting or ask your own question. But it happens every day.

All rights reserved. Numeric expressions `expr' supports the usual numeric operators, in order of increasing precedence. If capturing groups are used, each group will be stored as a separate element in the array. Expr Mac Why are some programming languages Turing complete but lack some abilities of other languages?

You put me onto something, and after a quick Google I came across a solution here. If the two values being tested are not equivalent, the result is true (1), otherwise the result is false (0). 5 is equivalent to 5, so the result is false: 0 This is the safest way there is. 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

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" Bash Substring 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 That just returns 0 as not found. Is this safe to display MySQL query error in webpage if something went wrong?

Bash Expr Index Example

User contributions on this site are licensed under the Creative Commons Attribution Share Alike 4.0 International License. ARG1 % ARG2 arithmetic remainder of ARG1 divided by ARG2. Expr Index Syntax Error GTIN validation Is the empty set homeomorphic to itself? Expr Syntax Error In Shell Script why?

These have lower precedence than both the numeric and relational operators (in the next sections). weblink Religious supervisor wants to thank god in the acknowledgements What to tell to a rejected candidate? In this example, 5 is not greater than 10, so the output is: 0 expr 5 \!= 5 Just as the = operator tests for equivalence, the != operator tests for ed — A simple text editor. Expr Syntax Error Multiplication

At this stage your variable $of will hold the process id of the php-fpm. Roberts 1524 which OS du you use? share|improve this answer edited Aug 31 '14 at 8:29 answered Aug 30 '14 at 23:10 Tom Fenech 38.6k53063 add a comment| Your Answer draft saved draft discarded Sign up or http://sovidi.com/syntax-error/bash-expr-index-syntax-error.php For example, This works: Code: $ temp='Fantastic' $ expr substr $temp 1 3 Fan Whereas this doesn't: Code: $ temp='Fantastic work' $ expr substr $temp 1 3 expr: syntax error The

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, 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.

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Tango Icons Tango Desktop Project. 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 If not, why? ARG1 = ARG2 ARG1 is equal to ARG2.

asked 3 years ago viewed 649 times active 10 months ago Related 1Why is this bash script not working?2awk + perl + get two arguments in to awk syntax2Command does not I'm pretty sure having double quotes around it in a script makes a difference, but that might just be to do with $variables within the "s. String expressions `expr' supports pattern matching and other string operators. his comment is here UNIX is a registered trademark of The Open Group.

Apple may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in the conversations captured in an electronic Dennis numbers 2.0 Meaning of "soul-sapping" Convince people not to share their password with trusted others A name for a well-informed person who is not believed? The returned output is the number of characters that matched. Please click the link in the confirmation email to activate your subscription.

Dennis numbers 2.0 So sayeth the Shepherd How's the CMD trip bonuses from extra legs work? To steal your idea and translate it to zsh, that would look something like the following:test=string1echo ${#test%%[string2]*}It doesn't seem to work in bash to do both of these operations in one 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 I had had a tough day too.

It doesn't happen as often as it should, because scientists are human and change is sometimes painful. 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 So the value 5 is equivalent to a string containing the number "5". That's something you don't see every day; I'm really impressed.

Was this page useful? Both arguments are coerced to numbers; an error occurs if this cannot be done. If no character in CHARSET is found in STRING, return 0. 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.

Apple Info Site Map Hot News RSS Feeds Contact Us Copyright © Apple Inc. index STRING CHARS index in STRING where any CHARS is found, or 0.