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80 lines
3.6 KiB
80 lines
3.6 KiB
Find all files with extension .py and exec permissions, grep only rows that contain *return* word.
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[source.sh]
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----
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find /usr/share -name "*.py" -type f -executable -exec grep -Hnsw "return" {} \;
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search for files in a directory hierarchy
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-name pattern
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Base of file name (the path with the leading directories removed) matches shell pattern pattern.
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The metacharacters (`*', `?', and `[]') match a `.' at the start of the base name (this is a
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change in findutils-4.2.2; see section STANDARDS CONFORMANCE below). To ignore a directory and
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the files under it, use -prune; see an example in the description of -path. Braces are not
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recognised as being special, despite the fact that some shells including Bash imbue braces with a
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special meaning in shell patterns. The filename matching is performed with the use of the
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fnmatch(3) library function. Don't forget to enclose the pattern in quotes in order to protect
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it from expansion by the shell.
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type c
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File is of type c:
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b block (buffered) special
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c character (unbuffered) special
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d directory
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p named pipe (FIFO)
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f regular file
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l symbolic link
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s socket
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-exec command ;
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Execute command; true if 0 status is returned. All following arguments to find are taken to be
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arguments to the command until an argument consisting of `;' is encountered. The string `{}' is
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replaced by the current file name being processed everywhere it occurs in the arguments to the
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command, not just in arguments where it is alone, as in some versions of find. Both of these
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constructions might need to be escaped (with a `\') or quoted to protect them from expansion by
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the shell. See the EXAMPLES section for examples of the use of the -exec option. The specified
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command is run once for each matched file. The command is executed in the starting directory.
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There are unavoidable security problems surrounding use of the -exec action; you should use the
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-execdir option instead.
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grep searches the named input FILEs (or standard input if no files are named, or if a single hyphen-minus
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(-) is given as file name) for lines containing a match to the given PATTERN. By default, grep prints
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the matching lines.
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print lines matching a pattern
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-H, --with-filename
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Print the file name for each match. This is the default when there is more than one file to
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search.
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-n, --line-number
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Prefix each line of output with the 1-based line number within its input file. (-n is specified
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by POSIX.)
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-s, --no-messages
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Suppress error messages about nonexistent or unreadable files. Portability note: unlike GNU grep,
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7th Edition Unix grep did not conform to POSIX, because it lacked -q and its -s option behaved
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like GNU grep's -q option. USG-style grep also lacked -q but its -s option behaved like GNU grep.
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Portable shell scripts should avoid both -q and -s and should redirect standard and error output
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to /dev/null instead. (-s is specified by POSIX.)
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-w, --word-regexp
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Select only those lines containing matches that form whole words. The test is that the matching
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substring must either be at the beginning of the line, or preceded by a non-word constituent
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character. Similarly, it must be either at the end of the line or followed by a non-word
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constituent character. Word-constituent characters are letters, digits, and the underscore.
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----
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