Change directories in shell scripts with string variables

Question

I have a series of directories that are only different by a numerical tag.

arr=(0 1 2 3)
i=0
while [ $i -le ${arr}]
do
  dir="~Documents/seed" 
  dir+=${arr[i]}
  echo $dir #works
  cd dir #directory not found
  #do other things#
done

Is it possible to do this?

is there a slash missing before Documents?

Pavel
– Pavel

2014-06-16 21:43:29 +00:00
Commented Jun 16, 2014 at 21:43 — Pavel
– Pavel, Commented Jun 16, 2014 at 21:43
You probably want [ $i -lt ${#arr[@]} ] in line 3

Mark Setchell
– Mark Setchell

2014-06-16 22:08:12 +00:00
Commented Jun 16, 2014 at 22:08 — Mark Setchell
– Mark Setchell, Commented Jun 16, 2014 at 22:08

Mark Setchell · Accepted Answer · 2014-06-17 21:20:58Z

2

This might be easier:

#!/bin/bash
for d in ~/Dcouments/seed*
do
   if [ -d "$d" ]; then
      echo $d
   fi
done

Note:

You have tarfiles in ~/Documents too (with names that also match the wildcard), so I have added an if statement that checks if it is a directory or a file and only reacts to directories.

edited Jun 17, 2014 at 21:20

answered Jun 16, 2014 at 22:12

Mark Setchell

210k32 gold badges310 silver badges504 bronze badges

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

3 Comments

user3746406 Over a year ago

Hi, echo $d only lists one of the directories.

Mark Setchell Over a year ago

Please run ls -l ~/Documents and post the output and I'll have another look for you.

Mark Setchell Over a year ago

Ok, I see what you have now and have updated my answer - it should work now.

Collectives™ on Stack Overflow

Change directories in shell scripts with string variables

1 Answer 1

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related