Bash Script Error Unexpected Operator
Shells like Kshell which have a built-in test command (e.g. [[ $a == $b ]]) recognise an empty variable and do the right thing because the expression is being evaluated internally. If not, why? grail View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by grail 03-07-2014, 07:52 AM #3 rtmistler Senior Member Registered: Mar 2011 Location: Bash supports '==' but dash doesn't. this contact form
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Bash Script Syntax Error Unexpected End Of File
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- In line 5, the shell substitutes the value of number where it sees $number.
- Watching your script run It is possible to have bash show you what it is doing when you run your script.
- The shebang line must be the very first thing in the file.
- For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration.
- The fully correct one is the now top-voted by Nietzche-jou.
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Why are some programming languages Turing complete but lack some abilities of other languages? Many many thanks. (I was a bash 1.2 user). –Otheus Nov 6 '15 at 19:21 add a comment| up vote 1 down vote This script does everything. Browse other questions tagged bash shell ubuntu or ask your own question. Bash Script Error Command Not Found How to indicate you are going straight?
Linux is a registered trademark of Linus Torvalds. Bash Unexpected Operator String Comparison What kind of error is here? What I was looking for is, when I do : ./test.sh -H localhost -wr 2 -cr 5 -arg cpu_load It should test apache for its cpu_load. 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
current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list. Bash Script Error Check What does an 'ü' mean? What the shell was trying to tell us was that there was only one item and there should have been a unary operator (like "!") that only operates on a single First, the problem is not in Bash vs sh syntax, both can call [ command correctly.
Bash Unexpected Operator String Comparison
Thanks for the explanation it's helped a lot and will be very useful to know in the future too. –kemra102 Aug 18 '12 at 12:25 Let me add that Are you new to LinuxQuestions.org? Bash Script Syntax Error Unexpected End Of File Frequently, you will do this to a block of code to see if a particular problem goes away. Unexpected Operator In Shell Script What does the "Phi" sign stand for in musical notation?
Please visit this page to clear all LQ-related cookies. http://sovidi.com/bash-script/bash-script-error-log.php This is one reason you should test your scripts frequently when you are writing them so there is less new code to test. Although, bash was based on and is largely backwards-compatable with sh, and they might actually be the same program on your system, but will still behave differently depending on which name grail View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by grail Thread Tools Show Printable Version Email this Page Search this Thread Advanced Unexpected Operator Shell Script If
For instance if one the files has a '-' (dash/hyphen) in the filename which is not escaped (by prefixing it with a backslash ('\')) it might be interpreted as a parameter. Can filling up a 75 gallon water heater tank without opening a faucet cause damage? Equivalent to case "$str" in *[aeiou]*) echo Yes;; *) echo No;; esac –glenn jackman Nov 6 '15 at 19:18 | show 1 more comment up vote 3 down vote Even though navigate here For example.: #!/bin/bash number=1 set -x if [ $number = "1" ]; then echo "Number equals 1" else echo "Number does not equal 1" fi set +x Previous | Contents |
asked 3 years ago viewed 680 times active 3 years ago Related 3Why does this “while read” work in a terminal, but not in a shell script?1Why do I get different Bash Script Error Output First, let me say there is nothing wrong with line 3. In your case, $filename expands to at least one file, but you should be aware that's not always the case.
Bash script Blackout_08 Programming 2 06-22-2006 02:21 PM bash script and the , operator xviddivxoggmp3 Programming 1 08-14-2004 12:33 AM All times are GMT -5.
That's not in any manual I have. There are two kinds of messages that you should insert. Verbs of buttons on websites Activate Hearthstone season chest cards? Bash Script Error Log So either change the == to =, or your shebang to #!/bin/bash share|improve this answer edited Jun 28 '14 at 7:56 answered Jun 28 '14 at 7:37 mata 33.8k36487
These errors can be a real pain to find in a long script. I can still move the shebang of course, but that doesn't really explain as to why it works when you don’t sudo the whole script. –kemra102 Aug 18 '12 at 11:50 Some distributions don't offer a true sh anymore. his comment is here Dec 16 '15 at 6:24 This question has been asked before and already has an answer.