Search Results

you also can have
#cat toto
orange
tomato
# grep -f toto veg
orange
tomato
tomato

To do a direct convert of your pseudo code, using bash arrays:

#!/bin/bash
table=(apple orange tomato)
for((i=0; i < ${#table[@]}; i++))
do
grep ${table[$i]} h.txt
done

[ctsgnb@shell ~]$ cat veg
whatever
orange
tomato
whatever
tomato
whatever
[ctsgnb@shell ~]$ var='tomato|orange'
[ctsgnb@shell ~]$ grep -E "$var" veg
orange
tomato
tomato
[ctsgnb@shell ~]$