I have a set of .java
files in one directory. Now i want to check if the {
(left brace) is beginning a new line or not.
For example,
class Name{
public static void main(String args[])
{
System.out.println("Hello");
}
}
The script has to check how many {
are beginning a new line and how many are not, and give a count.
Use grep -c '^\\s*{' <filename>
to get the number of opening braces "{" that are not preceded by anything else on their line. This would however also count lines where some text follows a brace. So you might want to use grep -c '^\\s*{\\s*$'
, which counts lines that only contain a brace (sourounded by arbitrary white-space).
i want to check if the "{" (parenthesis) is beginning from separate line or not.
It's not clear exactly what you mean, but if you are simply wanting to know if the "{" char appears in the first position on a line, then "^" in a grep or egrep matches as "starts with". So grep ^{ *.java would find those lines. If that's not what you mean, please change your question text to be specific.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.