How to use strings in subsequent bash commands?

Question

I'm pretty unfamiliar with bash syntax and I'm running into a problem of how to use strings from a previous operation as inputs into subsequent ones. Here's what I have now:

#!/bin/bash

searchTerm=$1

results=$(npm search $searchTerm --json | jq '.[].name')

for term in $results
do
  info=$(npm info $term)

  echo "####" $info
done

The command that executes looks like the following and fails:

npm info "\"exampleTerm\""

How do I use $term in the for loop in combination with npm info?

What does the output of npm search $searchTerm --json | jq '.[].name' look like? — Benjamin W.
– Benjamin W., Commented May 27, 2017 at 22:11

Shammel Lee · Accepted Answer · 2017-06-02 09:34:57Z

1

A (long) one-liner will do it…

npm search react-redux --json | jq '.[].name' | xargs -I pkg sh -c 'echo "#### $(npm info $1)"' - pkg

answered Jun 2, 2017 at 9:34

Shammel Lee

4,5251 gold badge19 silver badges21 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Geuis · Accepted Answer · 2017-05-27 22:15:07Z

0

Answer is to use eval like the following:

#!/bin/bash

searchTerm=$1

results=$(npm search $searchTerm --json | jq '.[].name')

for term in $results
do
  info=$(eval npm info "$term")

  echo "####" $info
done

answered May 27, 2017 at 22:15

Geuis

42.5k57 gold badges164 silver badges223 bronze badges

Collectives™ on Stack Overflow

How to use strings in subsequent bash commands?

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related