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8858 /usr/bin/grep doesn't support -E option
4580 /usr/bin/grep can't handle multibyte characters
8929 8868 tests are not delivered with system/test/utiltest
8860 Example in grep(1) is incorrect
Reviewed by: Peter Tribble <peter.tribble@gmail.com>
Reviewed by: Toomas Soome <tsoome@me.com>
Reviewed by: Yuri Pankov <yuripv@gmx.com>

*** 4,28 **** NAME grep - search a file for a pattern SYNOPSIS ! /usr/bin/grep [-c | -l |-q] [-r | -R] [-bHhinsvw] ! limited-regular-expression [filename]... ! ! ! /usr/xpg4/bin/grep [-E | -F] [-c | -l | -q] [-r | -R] [-bHhinsvwx] [-A number] [-B number] [-C number | -number] -e pattern_list... [-f pattern_file]... [file]... ! /usr/xpg4/bin/grep [-E | -F] [-c | -l | -q] [-r | -R] [-bHhinsvwx] [-A number] [-B number] [-C number | -number] [-e pattern_list]... -f pattern_file... [file]... ! /usr/xpg4/bin/grep [-E | -F] [-c | -l | -q] [-r | -R] [-bHhinsvwx] [-A number] [-B number] [-C number | -number] pattern [file]... DESCRIPTION The grep utility searches text files for a pattern and prints all lines --- 4,24 ---- NAME grep - search a file for a pattern SYNOPSIS ! /usr/bin/grep [-E | -F] [-c | -l | -q] [-r | -R] [-bHhinsvwx] [-A number] [-B number] [-C number | -number] -e pattern_list... [-f pattern_file]... [file]... ! /usr/bin/grep [-E | -F] [-c | -l | -q] [-r | -R] [-bHhinsvwx] [-A number] [-B number] [-C number | -number] [-e pattern_list]... -f pattern_file... [file]... ! /usr/bin/grep [-E | -F] [-c | -l | -q] [-r | -R] [-bHhinsvwx] [-A number] [-B number] [-C number | -number] pattern [file]... DESCRIPTION The grep utility searches text files for a pattern and prints all lines
*** 37,77 **** If no files are specified, grep assumes standard input. Normally, each line found is copied to standard output. The file name is printed before each line found if there is more than one input file. ! /usr/bin/grep ! The /usr/bin/grep utility uses limited regular expressions like those ! described on the regexp(5) manual page to match the patterns. ! ! /usr/xpg4/bin/grep ! The options -E and -F affect the way /usr/xpg4/bin/grep interprets ! pattern_list. If -E is specified, /usr/xpg4/bin/grep interprets ! pattern_list as a full regular expression (see -E for description). If ! -F is specified, grep interprets pattern_list as a fixed string. If ! neither are specified, grep interprets pattern_list as a basic regular ! expression as described on regex(5) manual page. OPTIONS ! The following options are supported for both /usr/bin/grep and ! /usr/xpg4/bin/grep: -b Precedes each line by the block number on which it was found. This can be useful in locating block numbers by context (first block is 0). -c Prints only a count of the lines that contain the pattern. -H Precedes each line by the name of the file containing the matching line. -h Prevents the name of the file containing the matching line from being prepended to that line. Used when searching multiple files. --- 33,131 ---- If no files are specified, grep assumes standard input. Normally, each line found is copied to standard output. The file name is printed before each line found if there is more than one input file. ! The options -E and -F affect the way grep interprets pattern_list. If ! -E is specified, grep interprets pattern_list as a full regular ! expression (see -E for description). If -F is specified, grep ! interprets pattern_list as a fixed string. If neither are specified, ! grep interprets pattern_list as a basic regular expression as described ! on regex(5) manual page. OPTIONS ! The following options are supported: ! ! -A number ! Prints number input lines of context after each matching line. If ! there are multiple matching lines, their context lines are ! separated by a -- delimiter line. ! -b Precedes each line by the block number on which it was found. This can be useful in locating block numbers by context (first block is 0). + -B number + Prints number input lines of context before each matching line. + If there are multiple matching lines, their context lines are + separated by a -- delimiter line. + + -c Prints only a count of the lines that contain the pattern. -H Precedes each line by the name of the file containing the matching line. + -e pattern_list + Specifies one or more patterns to be used during the search for + input. Patterns in pattern_list must be separated by a NEWLINE + character. A null pattern can be specified by two adjacent + newline characters in pattern_list. Unless the -E or -F option + is also specified, each pattern is treated as a basic regular + expression. Multiple -e and -f options are accepted by grep. All + of the specified patterns are used when matching lines, but the + order of evaluation is unspecified. + + + -E + Matches using full regular expressions. Treats each pattern + specified as a full regular expression. If any entire full + regular expression pattern matches an input line, the line is + matched. A null full regular expression matches every line. Each + pattern is interpreted as a full regular expression as described + on the regex(5) manual page, except for \( and \), and including: + + 1. A full regular expression followed by + that matches + one or more occurrences of the full regular + expression. + + 2. A full regular expression followed by ? that matches 0 + or 1 occurrences of the full regular expression. + + 3. Full regular expressions separated by | or by a new- + line that match strings that are matched by any of the + expressions. + + 4. A full regular expression that is enclosed in + parentheses () for grouping. + The order of precedence of operators is [], then *?+, then + concatenation, then | and new-line. + + + -f pattern_file + Reads one or more patterns from the file named by the path name + pattern_file. Patterns in pattern_file are terminated by a + NEWLINE character. A null pattern can be specified by an empty + line in pattern_file. Unless the -E or -F option is also + specified, each pattern is treated as a basic regular expression. + + + -F + Matches using fixed strings. Treats each pattern specified as a + string instead of a regular expression. If an input line contains + any of the patterns as a contiguous sequence of bytes, the line + is matched. A null string matches every line. See fgrep(1) for + more information. + + -h Prevents the name of the file containing the matching line from being prepended to that line. Used when searching multiple files.
*** 106,115 **** --- 160,177 ---- Quiet. Does not write anything to the standard output, regardless of matching lines. Exits with zero status if an input line is selected. + -number + -C number + Prints number input lines of context before and number input + lines of context after each matching line. If there are multiple + matching lines, their context lines are separated by a -- + delimiter line. + + -s Suppresses error messages about nonexistent or unreadable files. -v
*** 119,238 **** -w Searches for the expression as a word as if surrounded by \< and \>. - /usr/xpg4/bin/grep - The following options are supported for /usr/xpg4/bin/grep only: - - -A number - Prints number input lines of context after each - matching line. If there are multiple matching lines, - their context lines are separated by a -- delimiter - line. - - - -B number - Prints number input lines of context before each - matching line. If there are multiple matching lines, - their context lines are separated by a -- delimiter - line. - - - -number - -C number - Prints number input lines of context before and - number input lines of context after each matching - line. If there are multiple matching lines, their - context lines are separated by a -- delimiter line. - - - - -e pattern_list - Specifies one or more patterns to be used during the - search for input. Patterns in pattern_list must be - separated by a NEWLINE character. A null pattern can - be specified by two adjacent newline characters in - pattern_list. Unless the -E or -F option is also - specified, each pattern is treated as a basic - regular expression. Multiple -e and -f options are - accepted by grep. All of the specified patterns are - used when matching lines, but the order of - evaluation is unspecified. - - - -E - Matches using full regular expressions. Treats each - pattern specified as a full regular expression. If - any entire full regular expression pattern matches - an input line, the line is matched. A null full - regular expression matches every line. Each pattern - is interpreted as a full regular expression as - described on the regex(5) manual page, except for \( - and \), and including: - - 1. A full regular expression followed by + - that matches one or more occurrences of - the full regular expression. - - 2. A full regular expression followed by ? - that matches 0 or 1 occurrences of the - full regular expression. - - 3. Full regular expressions separated by | - or by a new-line that match strings that - are matched by any of the expressions. - - 4. A full regular expression that is - enclosed in parentheses () for grouping. - The order of precedence of operators is [], then - *?+, then concatenation, then | and new-line. - - - -f pattern_file - Reads one or more patterns from the file named by - the path name pattern_file. Patterns in pattern_file - are terminated by a NEWLINE character. A null - pattern can be specified by an empty line in - pattern_file. Unless the -E or -F option is also - specified, each pattern is treated as a basic - regular expression. - - - -F - Matches using fixed strings. Treats each pattern - specified as a string instead of a regular - expression. If an input line contains any of the - patterns as a contiguous sequence of bytes, the line - is matched. A null string matches every line. See - fgrep(1) for more information. - - -x ! Considers only input lines that use all characters ! in the line to match an entire fixed string or ! regular expression to be matching lines. OPERANDS The following operands are supported: file A path name of a file to be searched for the patterns. If no file operands are specified, the standard input is used. - - /usr/bin/grep - pattern - Specifies a pattern to be used during the search for input. - - - /usr/xpg4/bin/grep pattern ! Specifies one or more patterns to be used during the search ! for input. This operand is treated as if it were specified ! as -e pattern_list. USAGE The -e pattern_list option has the same effect as the pattern_list operand, but is useful when pattern_list begins with the hyphen --- 181,207 ---- -w Searches for the expression as a word as if surrounded by \< and \>. -x ! Considers only input lines that use all characters in the line to ! match an entire fixed string or regular expression to be matching ! lines. OPERANDS The following operands are supported: file A path name of a file to be searched for the patterns. If no file operands are specified, the standard input is used. pattern ! Specifies one or more patterns to be used during the search for ! input. This operand is treated as if it were specified as -e ! pattern_list. USAGE The -e pattern_list option has the same effect as the pattern_list operand, but is useful when pattern_list begins with the hyphen
*** 294,319 **** All of the following commands print all lines containing strings abc or def or both: ! example% /usr/xpg4/bin/grep 'abc def' ! example% /usr/xpg4/bin/grep -e 'abc def' ! example% /usr/xpg4/bin/grep -e 'abc' -e 'def' ! example% /usr/xpg4/bin/grep -E 'abc|def' ! example% /usr/xpg4/bin/grep -E -e 'abc|def' ! example% /usr/xpg4/bin/grep -E -e 'abc' -e 'def' ! example% /usr/xpg4/bin/grep -E 'abc def' ! example% /usr/xpg4/bin/grep -E -e 'abc def' ! example% /usr/xpg4/bin/grep -F -e 'abc' -e 'def' ! example% /usr/xpg4/bin/grep -F 'abc def' ! example% /usr/xpg4/bin/grep -F -e 'abc def' Example 4 Finding Lines with Matching Strings --- 263,288 ---- All of the following commands print all lines containing strings abc or def or both: ! example% /usr/bin/grep 'abc def' ! example% /usr/bin/grep -e 'abc def' ! example% /usr/bin/grep -e 'abc' -e 'def' ! example% /usr/bin/grep -E 'abc|def' ! example% /usr/bin/grep -E -e 'abc|def' ! example% /usr/bin/grep -E -e 'abc' -e 'def' ! example% /usr/bin/grep -E 'abc def' ! example% /usr/bin/grep -E -e 'abc def' ! example% /usr/bin/grep -F -e 'abc' -e 'def' ! example% /usr/bin/grep -F 'abc def' ! example% /usr/bin/grep -F -e 'abc def' Example 4 Finding Lines with Matching Strings
*** 321,332 **** Both of the following commands print all lines matching exactly abc or def: ! example% /usr/xpg4/bin/grep -E '^abc$ ^def$' ! example% /usr/xpg4/bin/grep -F -x 'abc def' ENVIRONMENT VARIABLES See environ(5) for descriptions of the following environment variables --- 290,303 ---- Both of the following commands print all lines matching exactly abc or def: ! example% /usr/bin/grep -E '^abc$ ! ^def$' ! example% /usr/bin/grep -F -x 'abc ! def' ENVIRONMENT VARIABLES See environ(5) for descriptions of the following environment variables
*** 349,367 **** ATTRIBUTES See attributes(5) for descriptions of the following attributes: - /usr/bin/grep - - +---------------+-----------------+ - |ATTRIBUTE TYPE | ATTRIBUTE VALUE | - +---------------+-----------------+ - |CSI | Not Enabled | - +---------------+-----------------+ - - /usr/xpg4/bin/grep +--------------------+-------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-------------------+ |CSI | Enabled | --- 320,329 ----
*** 374,391 **** SEE ALSO egrep(1), fgrep(1), sed(1), sh(1), attributes(5), environ(5), largefile(5), regex(5), regexp(5), standards(5) NOTES - /usr/bin/grep - Lines are limited only by the size of the available virtual memory. If - there is a line with embedded nulls, grep only matches up to the first - null. If the line matches, the entire line is printed. - - /usr/xpg4/bin/grep The results are unspecified if input files contain lines longer than LINE_MAX bytes or contain binary data. LINE_MAX is defined in /usr/include/limits.h. ! June 5, 2017 GREP(1) --- 336,351 ---- SEE ALSO egrep(1), fgrep(1), sed(1), sh(1), attributes(5), environ(5), largefile(5), regex(5), regexp(5), standards(5) NOTES The results are unspecified if input files contain lines longer than LINE_MAX bytes or contain binary data. LINE_MAX is defined in /usr/include/limits.h. + In the past the behavior of /usr/xpg4/bin/grep and /usr/bin/grep + utilities was different. Now /usr/bin/grep is replaced by + /usr/xpg4/bin/grep. + ! November 28, 2017 GREP(1)