"grep" command examples
Multiple patterns:
grep 'foo\|bar' *.txt
grep -E 'foo|bar' *.txt
grep -e foo -e bar *.txt
Each pattern in a file on a new line:
grep -f patterns.txt *.txt
Multiple patterns:
grep 'foo\|bar' *.txt
grep -E 'foo|bar' *.txt
grep -e foo -e bar *.txt
Each pattern in a file on a new line:
grep -f patterns.txt *.txt