shell scripting

[Mauro Gatti]

Hi all, I must give to an internal procedure 4 parameters. This parameters are stored in a file.
I can't able to pass exactly these parameters to procedure.

The file eith parameters is like


alpha beta gamma delta
delta beta gamma alfa
beta sigma delta pi


the script is like:

#!/bin/sh
procedure ()
{

}

....

I must read the /tmp/file1.txt and run procdure like:
procedure alpha beta gamma delta

If I change IFS end i read file using:

for i in $(cat /tmp/file1.txt)
do
procedure $i
done

procedure get "alpha beta gamma delta" like a single parameter so into procedure $1 is alpha beta gamma delta and $2 $3 $4 are not set.


Any idea?

Thank You


[Thierry Poels_1 · Accepted solution]

hi,

while read a b c d
do
yourproc $a $b $c $d
done < /tmp/file1.txt

good luck,
Thierry.

[Donny Jekels]

My addition would be the same as the previous reply.

procedure() {
#
#
#
while read a b c d
do
other_proc ${a} ${b} ${c} ${d}
done < /tmp/file1.txt

}

off course you need to realize when you hit blank lines it will pass nothing at that time.

handle blank lines this way

procedure() {
#
cat /tmp/file1.txt | sed '/^$/d' | tee mydata
while read a b c d
do
my_other_proc ${a} $b} ${c} ${d}
done }

${a} is just a good programing habbit, to lock your variables. very usefull when the number of var's runs into the hundreds in the same script
peace
Donny