- grep text_to_find *.log
- find [text_to_find] by checking all the logfiles in the current folder
- grep -r text_to_find *
- find [text_to_find] by checking all files in the current folder or under it
Note that you can't do e.g.
grep -r [text_to_find] *.log because that will only search in folders named
[something].log. The reasons for this are complicated.
- So, how do you grep for a string which contains spaces and quote characters? This is probably some standard feature of Linux Shell syntax which everyone knows, but I don't, and that's why this page needs examples.
- A: Tentatively, you can surround a string with double-quotes and escape any quotes in the search-string with the backslash character. (Single quotes do not seem to work.)
- Likewise, how do you search a group of files? Using "*.*" for FILE doesn't seem to work, and leaving the FILE argument blank tells grep to expect input from STDIN.
- A: apparently "*" by itself; see examples above
The backtick character ("`") seems to mean "insert the output of this command here" -- so if you're trying to search for a literal backtick, it needs to be escaped with "\" ("\`"). This comes up sometimes when searching for SQL phrases.