How connect variable with a string in Bash?

Question

I am writing a bash script , I used 1 variable in my bash file like below

list=`/home/ea/students'

I wrote below link in my bash but I got error

cat $list /admin.txt

Do you know how can I connect variable and string together?

For starters, you're using two different style quotes in your list definition, which tend to mean very different things. — Adam Eberlin
– Adam Eberlin, Commented Oct 10, 2011 at 2:04
For future reference, including the error message in your post is more useful to those trying to help than, "I got error". — johnsyweb
– johnsyweb, Commented Oct 10, 2011 at 7:56

johnsyweb · Accepted Answer · 2011-10-10 02:05:22Z

4

Firstly you need to use single quotes (''') around strings, not backticks ('`')

list='/home/ea/students'

To append a string to a variable, do the following:

list=${list}/admin.txt

Demo:

echo $list
/home/ea/students/admin.txt

answered Oct 10, 2011 at 2:05

johnsyweb

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Comments

imm · Accepted Answer · 2011-10-10 02:03:56Z

2

Try this:

list='/home/ea/students'
...
cat "${list}/admin.txt"

answered Oct 10, 2011 at 2:03

imm

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Dimitre Radoulov · Accepted Answer · 2011-10-10 09:04:59Z

2

You can go with either:

cat "$list/admin.txt"

In this case the braces '{}' are not mandatory as the / is not a valid identifier name character.

... or, if you need a variable, recent bash versions provide more concise way for appending:

bash-4.1$ list=/home/ea/students
bash-4.1$ list+=/admin.txt
bash-4.1$ printf '%s\n' "$list"
/home/ea/students/admin.txt

answered Oct 10, 2011 at 9:04

Dimitre Radoulov

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