Command Substitution Line Syntax Error Unexpected End Of File
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company syntax error unexpected end of file php Business Learn more about hiring developers or posting ads with us Stack Overflow Questions syntax error unexpected end of file bash Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, syntax error unexpected end of file wordpress just like you, helping each other. Join them; it only takes a minute: Sign up -bash: command substitution: line XX: syntax error: unexpected end of file up vote 3 down vote favorite Why does the following syntax error unexpected end of file bash script code give me the error in the title? _say_hey() { echo "hey" } echo "$(_say_hey())" bash share|improve this question asked Feb 17 '13 at 2:51 Rose Perrone 27.9k20136157 add a comment| 1 Answer 1 active oldest votes up vote 5 down vote When calling a function, call it like an ordinary command (leave off the brackets): echo "$(_say_hey)" Note that the echo here is redundant; you could just write _say_hey on a line by
Syntax Error Unexpected End Of File Shell Script
itself for the same effect. share|improve this answer answered Feb 17 '13 at 2:54 nneonneo 97.9k19120217 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service. Not the answer you're looking for? Browse other questions tagged bash or ask your own question. asked 3 years ago viewed 649 times active 3 years ago Blog Stack Overflow Podcast #89 - The Decline of Stack Overflow Has Been Greatly… Related 731How do I parse command line arguments in bash?1608How do I tell if a regular file does not exist in bash?29Bash syntax error: unexpected end of file4in bash script unexpected “syntax error: unexpected end of file” on if statement3Looping in Bash: syntax error: unexpected end of file0Confusing syntax error: unexpected end of file-1linux bash syntax error: unexpected end of file1Bash - Unexpected End of File-2syntax error: unexpected end of file in bash error0.bashrc error bash: /home/jason/.bashrc: line 115: syntax error: unexpected end of file Hot Network Questions How to create a product attribute and assigned it all attribute set in magento 2 My girlfriend has me
Out Of Trouble by William Shotts, Jr. Now that our scripts are getting a little more complicated, I want to point out some common mistakes that you might run into. To do this,
Syntax Error Unexpected End Of File Python
create the following script called trouble.bash. Be sure to enter it exactly syntax error unexpected end of file unix as written. #!/bin/bash number=1 if [ $number = "1" ]; then echo "Number equals 1" else echo "Number does not syntax error unexpected end of file laravel equal 1" fi When you run this script, it should output the line "Number equals 1" because, well, number equals 1. If you don't get the expected output, check your typing; you http://stackoverflow.com/questions/14917511/bash-command-substitution-line-xx-syntax-error-unexpected-end-of-file made a mistake. Empty variables Edit the script to change line 3 from: number=1 to: number= and run the script again. This time you should get the following: [me@linuxbox me]$ ./trouble.bash /trouble.bash: [: =: unary operator expected. Number does not equal 1 As you can see, bash displayed an error message when we ran the script. You probably think that by removing the "1" on http://linuxcommand.org/wss0100.php line 3 it created a syntax error on line 3, but it didn't. Let's look at the error message again: ./trouble.bash: [: =: unary operator expected We can see that ./trouble.bash is reporting the error and the error has to do with "[". Remember that "[" is an abbreviation for the test shell builtin. From this we can determine that the error is occurring on line 5 not line 3. First, let me say there is nothing wrong with line 3. number= is perfectly good syntax. You will sometimes want to set a variable's value to nothing. You can confirm the validity of this by trying it on the command line: [me@linuxbox me]$ number= [me@linuxbox me]$ See, no error message. So what's wrong with line 5? It worked before. To understand this error, we have to see what the shell sees. Remember that the shell spends a lot of its life substituting text. In line 5, the shell substitutes the value of number where it sees $number. In our first try (when number=1), the shell substituted 1 for $number like so: if [ 1 = "1" ]; then However, when we
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company http://unix.stackexchange.com/tags/command-substitution/hot Business Learn more about hiring developers or posting ads with us Unix & Linux Questions Tags Users Badges Unanswered Ask Question Tag Info users hot new synonyms Hot answers tagged command-substitution day week month year all 303 What's the difference between $(stuff) and `stuff`? The old-style backquotes ` ` do treat backslashes and nesting a bit different. The new-style $() interprets everything in between ( ) as a command. echo $(uname | $(echo cat)) Linux echo syntax error `uname | `echo cat`` bash: command substitution: line 2: syntax error: unexpected end of file echo cat works if the nested backquotes are escaped: echo `uname | \`echo ... shell command-line command-substitution answered Jan 13 '11 at 11:30 wag 17.4k64646 75 Quoting within $(command substitution) in Bash In order from worst to best: DIRNAME="$(dirname $FILE)" will not do what you want if $FILE contains whitespace or globbing characters \[?*. DIRNAME=`dirname "$FILE"` is technically correct, but backticks are syntax error unexpected not recommended for command expansion because of the extra complexity when nesting them. DIRNAME=$(dirname "$FILE") is correct, but only because this ... bash shell quoting command-substitution answered Mar 6 '14 at 14:39 l0b0 17.3k1067141 71 How can I execute `date` inside of a cron tab job? Short answer: Try this: 0 * * * * echo hello >> ~/cron-logs/hourly/test`date "+\%d"`.log Note the backslash escaping the % sign. Long answer: The error message suggests that the shell which executes your command doesn't see the second back tick character: /bin/sh: -c: line 0: unexpected EOF while looking for matching ``' This is also ... cron quoting command-substitution answered Jan 20 '12 at 17:31 Adam Zalcman 1,7761113 38 Pass the output of previous command to next as an argument You are confusing two very different types of inputs. Standard input (stdin) Command line arguments These are different, and are useful for different purposes. Some commands can take input in both ways, but they typically use them differently. Take for example the wc command: Passing input by stdin: ls | wc -l This will count the lines in the output ... command-line pipe arguments command-substitution output answered Jan 10 '14 at 21:34 janos 3,9291336 37 What's the difference between $(stuff) and `stuff`? Obvious difference I observe is that you cannot nest backticks while you can nest $(). Maybe both exist f