Script
#!/bin/bash
echo “Using \”\$*\”:”
for a in “$*”; do
echo $a;
doneecho -e “\nUsing \$*:”
for a in $*; do
echo $a;
doneecho -e “\nUsing \”\$@\”:”
for a in “$@”; do
echo $a;
doneecho -e “\nUsing \$@:”
for a in $@; do
echo $a;
done
Run
variabledif.sh one two “three four”
The explanation and the results for the four cases are below.
In the first case, the parameters are regarded as one long quoted string:
Using “$*”:
one two three four
Case 2 (unquoted) – the string is broken into words by the for loop:
Using $*: one two three four
Case 3 – it treats each element of $@ as a quoted string:
Using "$@": one two three four
The last case – it treats each element as an unquoted string, so the last one is again split by what amounts to for three four:
Using $@: one two three four
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