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Concatenate and pass as parameter in bash


Concatenate and pass as parameter in bash

By : Joel Idzinga
Date : November 19 2020, 01:01 AM
Any of those help As has been said, using single quotes will pass the literal string $Gateway, rather than your intended variable value, instead use double quotes
code :
ssh blah@$IP "/sbin/route -v del default gw $Gateway;"


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Bash: pass a function as parameter

Bash: pass a function as parameter


By : Umer Kiani
Date : March 29 2020, 07:55 AM
This might help you If you don't need anything fancy like delaying the evaluation of the function name or its arguments, you don't need eval:
code :
function x()      { echo "Hello world";          }
function around() { echo before; $1; echo after; }

around x
function x()      { echo "x(): Passed $1 and $2";  }
function around() { echo before; "$@"; echo after; }

around x 1st 2nd
before
x(): Passed 1st and 2nd
after
Bash: pass variable as a single parameter / shell quote parameter

Bash: pass variable as a single parameter / shell quote parameter


By : AWatson9898
Date : March 29 2020, 07:55 AM
Hope this helps I'm writing a bash script which has to pass a variable to another program: , The problem seems to be inside the "program"
code :
variable="Hello World"    # quotes are needed because of the space
./program "$variable"     # here quotes again
echo "program received $# arguments:" 
i=1
for arg in "$@"      # again quotes needed
do echo "arg $((i=i+1)): '$arg'"    # and again
done
How to pass a bash variable as value of awk parameter?

How to pass a bash variable as value of awk parameter?


By : Steve Vo
Date : March 29 2020, 07:55 AM
it helps some times I would like to replace a variable inside the the awk command with a bash variable. , Sightly different approach:
code :
$ echo $var
one two three

$ field=3

$ echo $var | awk -v f="$field" '{print $f}'
three

$ field=2

$ echo $var | awk -v f="$field" '{print $f}'
two
How to pass query parameter to api using map method and concatenate every json response to setState in react?

How to pass query parameter to api using map method and concatenate every json response to setState in react?


By : user2116901
Date : March 29 2020, 07:55 AM
I wish this helpful for you If I understand your question correctly, then the only adjustment needed here is to update your setState() logic so that you append articles from your response to the articles array in your state:
code :
this.state.newsPaper.map(async (querypara) => {

    const requstone = await fetch(`https:someapisources=${querypara}&apiKey=${api_key}`);
    const dataone = await requstone.json();

    // Concatenate articles from response (dataone) to array in state
    this.setState({
        articles: this.state.articles.concat(dataone.articles)
    });
}
How to pass bash parameter to awk script?

How to pass bash parameter to awk script?


By : Rajan
Date : March 29 2020, 07:55 AM
like below fixes the issue You can pass variables to your awk script directly from the command line.
Change this line:
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