For a shell script the variable is a table name.
If the table name is test then execute
while IFS=',' read a; do drop.sh $a; done < abc
or else execute
while IFS=',' read a; do create.sh $a; done < abc
How can i achieve this in Linux
-
Tests and Conditionals is a useful guide section here.Charles Duffy– Charles Duffy2017-04-13 20:01:09 +00:00Commented Apr 13, 2017 at 20:01
Add a comment
|
2 Answers
You can use an if - else statement like this;
if [ test ]
then
do something
else
do something else
fi
In your case
if [ "$yourVariable" = "test" ]
then
while IFS=','...
else
while IFS=','...
fi
See here for more, it is bash specific, but mostly usable for other linux shells.
Edit As suggested in the comments, here are some other resources:
1 Comment
Charles Duffy
Please don't point folks at the ABS -- it's rather infamous for promoting bad practices in its examples. The BashGuide is a much more effectively-maintained introduction (with its relevant page here), as is the bash-hackers wiki, which covers
test here. By contrast, the POSIX spec for test will apply to all POSIX shells.For multiple conditions of the same type, you can also use the case:
for table in test bla something; do
case "$table" in
test)
echo actions for $table
;;
bla)
echo another actions for $table
;;
*)
echo actions for anything other as test or bla eg for $table
;;
esac
done
output from the above
actions for test
another actions for bla
actions for anything other as test or bla eg for something
e.g. for you case, you could write
table="test"
while IFS=, read -r a; do
case "$table" in
test) drop.sh "$a" ;;
*) create.sh "$a" ;;
esac
done < abc
Some notes:
- always use
read -runless you know why don't want the-r - always quote the variables like
"$a" - You
while read-ing the sameabcfor the both cases, so DRY (don't repeat yourself) and move thewhile read...outside of your condition...
