I need to read a file using a "Do/While" loop.
How can I read the contents as a string?
Here's my code:
cat directory/scripts/tv2dbarray.txt | while read line
do
echo "a line: $line"
done
Error:
test.sh: line 4: syntax error near unexpected token `done'
test.sh: line 4: `done'
There's no reason to use cat here -- it adds no functionality and spawns an unnecessary process.
while IFS= read -r line; do
echo "a line: $line"
done < file
To read the content of a file into a variable, use foo=$(<file).
(Note that this trims trailing newlines.)
read have such a feature? like, read->file line by line'sCONTENTS into variable_A and at same time, read->file line by line'S NUMBER into variable_B ? and I used CAPS at times to just make it more detailed, (so, uhm - I do not scream! :) ) if not; thanks anyway - have a great day!i=0; while read line; do ((i=i+1)); echo "Line $i: $line"; done < file You could also cheat and use grep -n to search for something that will match every line and number the results: grep -n '' file | while read... @ArtOfWarfare I can't help it. My native language is bash. 😀️ How wonderful to see a question and answer that are still relevant 10 years later!cat file | while read line
do
echo "a line: $line"
done
EDIT:
To get file contents into a var use:
foo="`cat file`"
done' test.sh: line 5: done'
This should work:
file=path/of/file/location/filename.txt
while IFS= read -r varname; do
printf '%s\n' "$varname"
done < "$file"
try it
while read p
do
echo $p
done < directory/scripts/tv2dbarray.txt
whileorifor an unbalanced quote, brace, bracket or parentheses?# or - it might be copy-pasted (with some rich text, Which is messing up the file itself)how-why-what-is this I am typing? uhm; it have (put simply) happened to me a bunch--of-times when I copy-pasting code into libreoffice, then copy-pasting it back(having colored the text) so some in-visible characters also get's copied - really weird - but it still is the same problem; to solve it you just by-hand type it(cat directory...) (for long files this is a problem) (for short snippets like this one, it's easily and quickly typed)Just needed to throw that in for any future explorer`