![]() These cron jobs need to be configured by root, since updatedb needs root privileges to traverse the whole filesystem. To see the full list of locate's options, type:Īdditionally, you can configure locate to update its database on scheduled times via a cron job, so a sample cron which updates the database at 1 AM would look like: 0 1 * * * updatedb It will look through its database of files and quickly print out path names that match the pattern that you have typed. Or, to look for a filename or pattern from within the current directory, you can type: pwd | xargs -n 1 -I locate "filepattern" If the install script doesn't do it for you, it can be done manually by typing sudo updatedbĪnd, to use it to look for some particular file, type: locate filename You should check the manual of your OS on how to install it, and once it's installed, it needs to initiate the database. One such common tool is locate or slocate/mlocate. However, there are more modern and faster tools than find, which are traversing your whole filesystem and indexing your files. Or if man pages aren't available at your system: find -help ![]() To see the full list of options, type man find The -include flag tells grep to only include files matching a certain pattern. This will pick up everything, but if you only want certain extensions, the option you'll want to use is - include. In order to use grep recursively, we must add the R tag after grep and change filetobesearched to directorypath. By default, grep will search all files in a given folder and its subfolders if you invoke it with the recursive -r flag. With the find command, you can use wildcards, and various switches. Grep can be used recursively if we need to search for a string pattern across multiple files in a directory. It starts recursively traversing for filename or pattern from within the current directory where you are positioned. If more than one match was found, then each line number will be appended to the filename.The default way to search for files recursively, and available in most cases is find. Demos/snippets/multiComptSigNeur.py:268Īnd voila, it generates the path of matched files and line number at which the match was found. python/moose/multiscale/core/mumbl.py:206 Only those files which matches this regular expression will be considered.įor example, if I want to search Python files with the extension py containing Pool( followed by word Adaptor, I do the following. This is another regular expression which works on a filename. The third argument, file_pattern, is optional. We use the regular expression format defined in the Python re library. The second argument, pattern_to_search, is a regular expression which we want to search in a file. The first argument, path, is the directory in which we will search recursively. This is how one should use this script./sniff.py path pattern_to_search I wrote a Python script which does something similar. -print0 and -null on the other side of the | (pipe) are the crucial ones, passing the filename from the find to the grep embedded in the xargs, allowing for the passing of filenames WITH spaces in the filenames, allowing grep to treat the path and filename as one string, and not break it up on each space.-type f specifies that you are looking for files.( -name " *.pas" -o -name " *.dfm" ) : Only the *.pas OR *.dfm files, OR specified with -o in the find specifies from the current directory. type f \( -name "*.pas" -o -name "*.dfm" \) -print0 | xargs -null grep -with-filename -line-number -no-messages -color -ignore-case "searchtext" ![]() type f -name "*.*" -print0 | xargs -null grep -with-filename -line-number -no-messages -color -ignore-case "searthtext"Īnd if you have an idea what the file type is you can narrow your search down by specifying file type extensions to search for, in this case. "/home" depending where you actually want to search.Įxpanding the grep a bit to give more information in the output, for example, to get the line number in the file where the text is can be done as follows: find. So in the examples above, you'd better replace ' /' by a sub-directory name, e.g. Warning: unless you really can't avoid it, don't search from '/' (the root directory) to avoid a long and inefficient search! Note: You can add 2>/dev/null to these commands as well, to hide many error messages. The Silver Searcher: ag 'text-to-find-here' / -l RipGrep - fastest search tool around: rg 'text-to-find-here' / -l Better try them, provided they're available on your platform, of course: Faster and easier alternatives The find command is often combined with xargs, by the way.įaster and easier tools exist for the same purpose - see below. \ 2>/dev/nullįind is the standard tool for searching files - combined with grep when looking for specific text - on Unix-like platforms. This will only search through those files which have. -e is the pattern used during the searchĪlong with these, -exclude, -include, -exclude-dir flags could be used for efficient searching:.-l (lower-case L) can be added to just give the file name of matching files.Do the following: grep -rnw '/path/to/somewhere/' -e 'pattern'
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