I am trying to declare an array in my shell script and then have written a for loop to access those array elements into another file. But it is only taking the first element. I've tried the below :
raw_cd=(1150 1151)
i=0
for i in "${raw_cd[@]}"
do
grep -wr "${raw_cd[@]}" file1.txt > /opt/tmp/raw.txt
echo "$i"
done
It is taking only the first element 1150 and also giving output as :-
file1.txt:|1150|
file1.txt:|1150|
file1.txt:|1150|
where am i doing wrong?
for does not deal with indices, just raw values. Thus,
raw_cd=(1150 1151)
for i in "${raw_cd[@]}"
do
echo "$i"
done
will print
1150
1151
If you want to use indices, you need to produce them yourself:
raw_cd=(1150 1151)
for i in $(seq "${#raw_cd[@]}")
do
echo "$i": "${raw_cd[$i - 1]}"
done
will produce
1: 1150
2: 1151
Even better, you can directly get keys like this, without seq (this will work even on associative arrays):
raw_cd=(1150 1151)
for i in "${!raw_cd[@]}"
do
echo "$i": "${raw_cd[$i]}"
done
for loop.zsh-specific. The first snippet should work in both bash and zsh
ior removei=0completelygrep -wr "$i" file1.txtinstead?> /opt/tmp/raw.txtoverwrites the file each loop. Did you mean to>> /opt/tmp/raw.txt?