Multiple strings

Natraj · 08-09-2018, 10:41 PM

Hello,

1)How can we find the multiple strings using the command "grep"?
2)And, what should be the effective command to find a file and inside a string in it.

MadeInGermany · 08-10-2018, 12:39 AM

Print lines with string1 OR string2t

Code:

egrep "string1|string2"

Code:

grep -e "string1" -e "string2"

Code:

grep "string1
string2"

Like this the grep reads from stdin.
If one more argument follows it is a filename where grep reads from.
If more than one arguments follow they are filenames where grep reads from, and a matching line is printed with the filename prefixed (separated with a colon).

syg00 · 08-10-2018, 01:21 AM

Has to be homework ...

JJJCR · 08-10-2018, 01:42 AM

Do you mean like this sample below:

Quote:

LIST="some string with a substring you want to match"
SOURCE="substring"
if echo "$LIST" | grep -q "$SOURCE"; then
echo "matched";
else
echo "no match";
fi

Taken from this link: https://stackoverflow.com/questions/...rep-a-variable