1/30/2023 0 Comments Grep multiple strings(bearing in mind that case-insensitive matching is often locale-dependent for instance, whether uppercase i is I or İ may depend on the locale according to grep -i i). The standard equivalent of that would look like: grep -e abc -e '' (and equivalent variants with other regexp syntaxes). Where it could be more interesting would be for instance if you want abc matching to be case sensitive and uyx not, which you could do with: grep -P 'abc|(?i)uyx' I found the use of egrep String1String2String3 file.txt wc-l Now what Im really after is that. Those don't really bring much advantage over the standard -i option. I need to grep multiple strings from a particular file. Grep '\(?i\)abc|uyx' # ast-open grep only which makes it non-POSIX-compliant Grep -E '(?i)abc|uyx' # ast-open grep only 1 Display multiple words into a single td tag display, html, html generation, multiple, newbies, tag, words Himanshu1 2 sed command to grep multiple. Grep -K '~(i)abc|uyx' # ast-open grep only grep -P '(?i)abc|uyx' # wherever -P / -perl-regexp / -X perl is supported You can use what’s known as a recursive search to cover entire directories, subdirectories. The (s and )s, like | also need to be quoted for them to be passed literally to grep as they are special characters in the syntax of the shell language.Ĭase insensitive matching can also be enabled as part of the regexp syntax with some grep implementations (not standardly). Grep can do much more than just search the contents of a specific file. You can add (.)s around abc|uyx ( \(.\) for BREs), but that's not necessary. # can make it explicit with -G, -basic-regexp or # default but with some grep implementations, you Grep -i 'abc\|uyx' # with the \| extension to basic regexps supported by Grep -i -K 'abc|uyx' # ksh regexps (with ast-open grep) also with Grep -i -X 'abc|uyx' # augmented regexps (with ast-open grep) also with With some grep implementations, you can also do: grep -i -P 'abc|uyx' # perl-like regexps, sometimes also with Many options with grep alone, starting with the standard ones: grep -i -e abc -e uyx
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |