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How to get the shell script to read the .txt file as an input/data?

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Top Forums Shell Programming and Scripting How to get the shell script to read the .txt file as an input/data?
# 8  
Old 05-04-2017
There is exactly one while read in your script. That's where it belongs.

The ... is the stuff inside the loop.

The 'done' at the end of the loop is something your script is missing right now and won't work without.
Last edited by Corona688; 05-04-2017 at 04:15 PM.. Reason: do/done
# 9  
Old 05-04-2017
Basically, what you have already:

Code:
while read variablename
do
...
done

What you need:

Code:
while read variablename
do
...
done < inputfile

# 10  
Old 05-04-2017
Ah I seem to understand, I will get back to you if I run into any issues

---------- Post updated at 09:18 PM ---------- Previous update was at 08:19 PM ----------

Quote:
Originally Posted by Corona688
In the shell.

Code:
while read file
do
...
done < inputfile

Write it inside the shell using any UNIX text editor you like. nano, pico, vi, emacs... Whichever you happen to have.
what exactly would i write in the shell for the input file. The text in the input file is :
i n p u t . t x t
add $s0 $s1 $s2
sub $s2 $t0 $t3
add $s0 $s1 $z2
lw $t1 8($t2)

addi $t3 $s0 −9
sw $s3 4($t0)
lw $t11 70000($s0)

how would i type this in the shell to be the input file that is to be read?
# 11  
Old 05-04-2017
Probably something along the lines of

Code:
nano filename

add $s0 $s1 $s2
sub $s2 $t0 $t3
add $s0 $s1 $z2
lw $t1 8($t2)

addi $t3 $s0 −9
sw $s3 4($t0)
lw $t11 70000($s0)

control-W
enter
control-X

If you really have no editor whatsoever - get one ASAP - you can cheat with

Code:
cat > input.txt <<EOF
addi $t3 $s0 −9
sw $s3 4($t0)
lw $t11 70000($s0)

addi $t3 $s0 −9
sw $s3 4($t0)
lw $t11 70000($s0)
EOF

# 12  
Old 05-05-2017
The "ASAP method" needs to avoid the shell's $var expansions.
Put the EOF in quotes!
Code:
cat > input.txt <<"_EOF_"
addi $t3 $s0 ?9
sw $s3 4($t0)
lw $t11 70000($s0)

addi $t3 $s0 ?9
sw $s3 4($t0)
lw $t11 70000($s0)
_EOF_

Still the shell might do some substititions. A safe method is to read from the Unix/Linux terminal input (at the shell prompt)
Code:
cat > input.txt

and paste the text/code into it, then hit Control-D to close the input.
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