Echo unary operator expected

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August undefined, 2024

Web#!/bin/bash. num1=”5″ num2=”” if [ $num1 -eq $num2 ]; then. echo “they are equal” fi WebMay 29, 2024 · -gt: unary operator expected I read that putting the variables in double quotes usually does the job but how would it work with a variable that is contained within brackets? bash

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WebApr 5, 2024 · If you want to see if a variable is empty, you can use the -z flag instead of comparing. The -z flag checks if the length of the variable is zero, and it returns true if it is zero.. Command: WebMar 6, 2009 · Hiya all, Why do I get a :unary operator expected when I try to put a condition statement in my shell script (sh) like so and how to fix? if ; then echo "say hello" else echo "don't say hello" fi ? It seems if the script receives an argument it works but if I don't put an... (4 Replies) Discussion started by: cyberfrog ... king school lunch menu

-gt: unary operator expected error on bash - Ask Ubuntu

WebMar 12, 2024 · $ ./test.sh ./test.sh: line 6: [: 1: unary operator expected As you can see, Bash already gives us some helpful information about how to troubleshoot the error, by … WebDec 12, 2024 · Now, for a review of the broken script you posted: for file in `cat ${2}` #$2 is file.txt Backticks are deprecated; see Have backticks (i.e. cmd) in *sh shells been … WebJan 21, 2024 · Stack Exchange Network. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for … luxury watches replica

Unary Operator Expected: Understanding and Solving the Error

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"WebDec 24, 2014 · unary operator expected means that you do a comparison where one site is empty for example if [ $name = "foo" ] and $name is empty. Then the bash shell … " - Echo unary operator expected

Echo unary operator expected

-gt: unary operator expected error on bash - Ask Ubuntu

WebApr 14, 2024 · 在c++中，如果没有定义operator=操作，编译器会提供一个默认的operator=操作。由于operator=操作和拷贝构造函数的功能类似，都执行拷贝操作。因此，编译器也分提供无用的默认operator=操作和非无用的默认operator=... WebJul 28, 2024 · ./unary.sh: line 5: [: ==: unary operator expected At line 5 of our script Bash is expecting a unary operator but the one we are using ( …

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WebDec 4, 2009 · unary operator expected hi i am trying to compare a value with value 50. but i am getting " I am using if then echo "------------" fi please help thanks in advance Satya (2 Replies) WebBed & Board 2-bedroom 1-bath Updated Bungalow. 1 hour to Tulsa, OK 50 minutes to Pioneer Woman You will be close to everything when you stay at this centrally-located …

WebMay 3, 2016 · Stack Exchange Network. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.. Visit Stack Exchange WebDec 26, 2024 · fi + '['-eq 1 ']'./ unity_check. sh: line 3: [:-eq: unary operator expected + echo 'Not equal to One !!' Not equal to One!! We can see from the debug log that the if …

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WebJul 15, 2015 · 「ls_chk」変数がnullとなり（if [ -ge 10 ]）となりエラー（ unary operator expected）となります。「unary operator expected」のエラーになる場合は、 if文で評価する変数に値が入っていないケースを考慮して “変数" のように""で変数を囲めばエラーの対処になるかと ... luxury watches rentalWebNov 11, 2024 · try it again with the following steps while true do echo “1. Add” echo “2. Subtract” echo “3. Multiply” echo “4. Divide” echo “5. Quit” king school of theologyWebOperator precedence determines how operators are parsed concerning each other. Operators with higher precedence become the operands of operators with lower precedence. king school of aviationWebMay 11, 2024 · 在 shell 脚本中，一元运算符对单个操作数进行操作以返回一个新值。本文将解释如何解决 Linux Bash 中的 [: =: unary operator expected 错误。. 解决 Bash 中的 [: =: unary operator expected 错误. 假设你的 bash 脚本指定了一行包含不适用于两个参数的二 … king school palm springsWebAnother scenario that you can get the [: too many arguments or [: a: binary operator expected errors is if you try to test for all arguments "[email protected]". if [ -z "[email protected]" ] then echo "Argument required."fi . It works correctly if you call foo.sh or foo.sh arg1.But if you pass multiple args like foo.sh arg1 arg2, you will get errors. luxury watches rolex submainerWebDec 10, 2016 · I have also run into the same issue when starting, stopping, and reloading fails running HA Proxy 1.7.9 on Cent7. haproxy.service - SYSV: HA-Proxy is a TCP/HTTP reverse proxy which is particularly suited for high availability environments. Loaded: loaded (/etc/rc.d/init.d/haproxy; bad; vendor preset: disabled) king school practice testWebOct 14, 2016 · Stack Exchange Network. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for … luxury watches reviews men