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Bash Syntax Error Operand Expected

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What does Sauron need with mithril? Is this safe to display MySQL query error in webpage if something went wrong? Last edited by ta0kira; 08-14-2011 at 04:48 PM. EOF is not inherently an error condition, but when an EOF is an error it usually means the interpreter thinks your program has ended prematurely--it was anticipating something, which never occurred http://waspsoft.com/syntax-error/bash-if-syntax-error-operand-expected.html

To check if the input is a positive integer (only unsigned digits) you can use this awesome bash regex: [[ "$number" =~ ^[0-9]+$ ]] that checks if $numbercontains only digits. What does an 'ü' mean? Click Here to receive this Complete Guide absolutely free. Search Forums Show Threads Show Posts Tag Search Advanced Search Unanswered Threads Find All Thanked Posts Go to Page... linux operating commands and unix operating commands operand expected (error

Bash Syntax Error Operand Expected (error Token Is )

Therefore, you don't need to go into directories again - i already has the word you need. The way you have it now the output of create-prompt-infobar becomes a static part of $PS1 as of your assignment to PS1. visdir=$(ls -l $tgtdir | grep ^d | wc -l) # Counts visible directories by using ls -l then filtering it with grep to find all lines starting with a d indicating

Note, however, that this must be `, same as the opening backquote. bash unix share|improve this question edited Nov 15 '15 at 16:04 Doorknob 33.1k1859103 asked Nov 15 '15 at 16:03 luke davis 13 1 You're missing lots and lots of spaces. The values got set correctly after issuing 'ls'. Bash (error Token Is "<= ") Page 1 of 2 1 2 > Search this Thread 08-14-2011, 12:35 PM #1 MTK358 LQ 5k Club Registered: Sep 2009 Posts: 6,443 Blog Entries: 3 Rep: bash

grail View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by grail 08-14-2011, 08:43 PM #15 crts Senior Member Registered: Jan 2010 Posts: Bash Int How rich can one single time travelling person actually become? GTIN validation Good way to explain fundamental theorem of arithmetic? MTK358 View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by MTK358 View Blog 08-14-2011, 04:41 PM #9 ta0kira Senior Member Registered: Sep

Browse other questions tagged bash scripts or ask your own question. Syntax Error In Expression (error Token Is A double quote may be quoted within double quotes by preceding it with a backslash. As you can see, it is also a little picky about spaces, but it wants the opposite of what expr wanted. The backslash preceding the !

Bash Int

share|improve this answer answered Jan 8 at 15:43 cxw 4,9252832 Cheers, this has helped alot –HRusby Jan 8 at 16:31 Thank you, and welcome to Stack Overflow! What does an 'ü' mean? Bash Syntax Error Operand Expected (error Token Is ) How to handle spending money for extended trip to Europe? (( I Syntax Error Operand Expected (error Token Is ) But when I run the script, it outputs an error: l<=: syntax error: operand expected (error token is "<=" I consulted the mighty Google and I understood it suffers from the

But inside a $(( )) construct, one does not escape *. weblink Keep getting errors. MTK358 View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by MTK358 View Blog 08-14-2011, 08:32 PM #13 crts Senior Member Registered: Jan How to pluralize "State of the Union" without an additional noun? Syntax Error Operand Expected (error Token Is = )

After I manipulated LINES I issued commands like 'echo', ':' and 'cd'. What are the holes on the sides of a computer case frame for? My home country claims I am a dual national of another country, the country in question does not. navigate here Kevin Barry PS You should also copy $?

ta0kira View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by ta0kira 08-14-2011, 05:19 PM #10 crts Senior Member Registered: Jan 2010 Posts: Invalid Arithmetic Operator (error Token Is Ask Ubuntu works best with JavaScript enabled UbuntuCommunityAsk!DeveloperDesignDiscourseHardwareInsightsJujuShopMore ›AppsHelpForumLaunchpadMAASCanonical current community chat Ask Ubuntu Ask Ubuntu Meta your communities Sign up or log in to customize your list. Is 8:00 AM an unreasonable time to meet with my graduate students and post-doc?

I don't know what to do.

expr¶ An old Unix program that can evaluate math is expr. share|improve this answer answered Oct 30 '14 at 11:56 jimmij 20k64267 BTW, you can omit $ inside parentheses: echo $((x+y)) –jimmij Oct 30 '14 at 12:04 why To keep with script programming paradigm and allow for better math support, languages such Perl or Python would be better suited when math is desired. Expr: Syntax Error Yes?

How to increase the population growth of the human race Should indoor ripened tomatoes be used for sauce? Join them; it only takes a minute: Sign up Syntax error: operand expected (error token is “+”) up vote 5 down vote favorite I'm writing a script in bash and I 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. his comment is here This is because each number and arithmetic operator must be passed as a separate command-line argument to expr: [email protected]:~$ expr 1+1 1+1 [email protected]:~$ expr 1 + 1 2 To fix this

It's more readable and shortens the code. Thankyou. Unexpected parent process id in output Can I use an HSA as investment vehicle by overcontributing temporarily? They all relate to command-line syntax, most for bash, but in one case for the separate expr utility.

tput is part of ncurses, and should be installed on all systems. This will keep each element as its own word. Also see the tour at stackoverflow.com/tour for more info and to get a badge :) . –cxw Jan 8 at 16:57 add a comment| Your Answer draft saved draft discarded makyo ( edit: minor typos ) Last edited by makyo; 08-14-2011 at 01:06 PM.

This form is more forgiving about spaces. $ ((e=5)) $ echo $e 5 $ (( e = e + 3 )) $ echo $e 8 $ (( e=e+4 )) # -- crts View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by crts 08-14-2011, 08:33 PM #14 grail LQ Guru Registered: Sep 2009 Location: declare¶ You may recall, that when the text book introduced the declare statement, it said that it is not always needed. Code: $ cat coltest #!/bin/bash COLUMNS=3 # WRONG value LINES=4 # WRONG value COLS=$(tput cols) LINS=$(tput lines) echo $COLS echo $LINS $ ./coltest 80 24 $ export COLUMNS LINES $ ./coltest

i mean at first run (k=0) it will increment array once, and at second run (k=1) it will increment the array again.. –teutara Dec 2 '12 at 18:49 1 All Then counts the lines with wc -l. Realism of a setting with several sapient anthropomorphic animal species In a GNU C macro envSet(name), what does (void) "" name mean? How to indicate you are going straight?

Finding a file starting with '-' dash Rosa Parks is a [symbol?] for the civil rights movement? Which requires more energy: walking 1 km or cycling 1 km at the same speed? I accepted a counter offer and regret it: can I go back and contact the previous company? Is 8:00 AM an unreasonable time to meet with my graduate students and post-doc?

Code: # custom prompt function create-prompt-infobar { local i=0 if (($COLUMNS >= (${#PWD} + ${#?} + 11))); then echo -n "$PWD" for ((i=0; i<($COLUMNS-${#PWD}-${#?}-10); i++)); do echo ""; done echo -n Is there a good way to get from Levoča to Lviv? I accepted a counter offer and regret it: can I go back and contact the previous company? See test.