On Mon, May 1, 2017 at 3:38 PM, ziyunfei <446240...@qq.com> wrote: > I have the same need as > http://stackoverflow.com/questions/14631794/check-if-file-contains-some-text-not-regex-in-unix#comment20438757_14631832. > > $ cat file > foo > bar > > $ echo "$fixed_string" > bar > foo > > $ grep -Fzq "$fixed_string" file && echo "Matched" || echo "Not matched" > Matched # false positive, -z doesn't apply to -F > > > $ [[ "$(cat file)" = *"$fixed_string"* ]] && echo "Matched" || echo "not > matched" > not matched # my workaround
Consider using perl, i.e., this matches: $ pat='foo bar' $ printf '%s\n' foo bar | perl -0 -ne 'm!\Q'"$pat"'\E! or die' This does not match: $ printf '%s\n' bar foo | perl -0 -ne 'm!\Q'"$pat"'\E! or die' Died at -e line 1, <> chunk 1.
