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If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] 12 .TH EGREP 1 "May 3, 2013" 13 .SH NAME 14 egrep \- search a file for a pattern using full regular expressions 15 .SH SYNOPSIS 16 .LP 17 .nf 18 \fB/usr/bin/egrep\fR [\fB-bcHhilnqsv\fR] \fB-e\fR \fIpattern_list\fR [\fIfile...\fR] 19 .fi 20 21 .LP 22 .nf 23 \fB/usr/bin/egrep\fR [\fB-bcHhilnqsv\fR] \fB-f\fR \fIfile\fR [\fIfile...\fR] 24 .fi 25 26 .LP 27 .nf 28 \fB/usr/bin/egrep\fR [\fB-bcHhilnqsv\fR] \fIpattern\fR [\fIfile...\fR] 29 .fi 30 31 .LP 32 .nf 33 \fB/usr/xpg4/bin/egrep\fR [\fB-bcHhilnqsvx\fR] \fB-e\fR \fIpattern_list\fR [\fB-f\fR \fIfile\fR] 34 [\fIfile...\fR] 35 .fi 36 37 .LP 38 .nf 39 \fB/usr/xpg4/bin/egrep\fR [\fB-bcHhilnqsvx\fR] [\fB-e\fR \fIpattern_list\fR] \fB-f\fR \fIfile\fR 40 [\fIfile...\fR] 41 .fi 42 43 .LP 44 .nf 45 \fB/usr/xpg4/bin/egrep\fR [\fB-bcHhilnqsvx\fR] \fIpattern\fR [\fIfile...\fR] 46 .fi 47 48 .SH DESCRIPTION 49 .sp 50 .LP 51 The \fBegrep\fR (\fIexpression grep\fR) utility searches files for a pattern of 52 characters and prints all lines that contain that pattern. \fBegrep\fR uses 53 full regular expressions (expressions that have string values that use the full 54 set of alphanumeric and special characters) to match the patterns. It uses a 55 fast deterministic algorithm that sometimes needs exponential space. 56 .sp 57 .LP 58 If no files are specified, \fBegrep\fR assumes standard input. Normally, each 59 line found is copied to the standard output. The file name is printed before 60 each line found if there is more than one input file. 61 .SS "/usr/bin/egrep" 62 .sp 63 .LP 64 The \fB/usr/bin/egrep\fR utility accepts full regular expressions as described 65 on the \fBregexp\fR(5) manual page, except for \fB\e(\fR and \fB\e)\fR, 66 \fB\e(\fR and \fB\e)\fR, \fB\e{\fR and \fB\e}\fR, \fB\e<\fR and \fB\e>\fR, and 67 \fB\en\fR, and with the addition of: 68 .RS +4 69 .TP 70 1. 71 A full regular expression followed by \fB+\fR that matches one or more 72 occurrences of the full regular expression. 73 .RE 74 .RS +4 75 .TP 76 2. 77 A full regular expression followed by \fB?\fR that matches 0 or 1 78 occurrences of the full regular expression. 79 .RE 80 .RS +4 81 .TP 82 3. 83 Full regular expressions separated by | or by a \fBNEWLINE\fR that match 84 strings that are matched by any of the expressions. 85 .RE 86 .RS +4 87 .TP 88 4. 89 A full regular expression that can be enclosed in parentheses \fB()\fRfor 90 grouping. 91 .RE 92 .sp 93 .LP 94 Be careful using the characters \fB$\fR, \fB*\fR, \fB[\fR, \fB^\fR, |, \fB(\fR, 95 \fB)\fR, and \fB\e\fR in \fIfull regular expression\fR, because they are also 96 meaningful to the shell. It is safest to enclose the entire \fIfull regular 97 expression\fR in single quotes (\fBa\'\fR\fBa\'\fR). 98 .sp 99 .LP 100 The order of precedence of operators is \fB[\|]\fR, then \fB*\|?\|+\fR, then 101 concatenation, then | and NEWLINE. 102 .SS "/usr/xpg4/bin/egrep" 103 .sp 104 .LP 105 The \fB/usr/xpg4/bin/egrep\fR utility uses the regular expressions described in 106 the \fBEXTENDED REGULAR EXPRESSIONS\fR section of the \fBregex\fR(5) manual 107 page. 108 .SH OPTIONS 109 .sp 110 .LP 111 The following options are supported for both \fB/usr/bin/egrep\fR and 112 \fB/usr/xpg4/bin/egrep\fR: 113 .sp 114 .ne 2 115 .na 116 \fB\fB-b\fR\fR 117 .ad 118 .RS 19n 119 Precede each line by the block number on which it was found. This can be useful 120 in locating block numbers by context (first block is 0). 121 .RE 122 123 .sp 124 .ne 2 125 .na 126 \fB\fB-c\fR\fR 127 .ad 128 .RS 19n 129 Print only a count of the lines that contain the pattern. 130 .RE 131 132 .sp 133 .ne 2 134 .na 135 \fB\fB-e\fR \fIpattern_list\fR\fR 136 .ad 137 .RS 19n 138 Search for a \fIpattern_list\fR (\fIfull regular expression\fR that begins with 139 a \fB\(mi\fR). 140 .RE 141 142 .sp 143 .ne 2 144 .na 145 \fB\fB-f\fR \fIfile\fR\fR 146 .ad 147 .RS 19n 148 Take the list of \fIfull\fR \fIregular\fR \fIexpressions\fR from \fIfile\fR. 149 .RE 150 151 .sp 152 .ne 2 153 .na 154 \fB\fB-H\fR\fR 155 .ad 156 .RS 19n 157 Precedes each line by the name of the file containing the matching line. 158 .RE 159 160 .sp 161 .ne 2 162 .na 163 \fB\fB-h\fR\fR 164 .ad 165 .RS 19n 166 Suppress printing of filenames when searching multiple files. 167 .RE 168 169 .sp 170 .ne 2 171 .na 172 \fB\fB-i\fR\fR 173 .ad 174 .RS 19n 175 Ignore upper/lower case distinction during comparisons. 176 .RE 177 178 .sp 179 .ne 2 180 .na 181 \fB\fB-l\fR\fR 182 .ad 183 .RS 19n 184 Print the names of files with matching lines once, separated by NEWLINEs. Does 185 not repeat the names of files when the pattern is found more than once. 186 .RE 187 188 .sp 189 .ne 2 190 .na 191 \fB\fB-n\fR\fR 192 .ad 193 .RS 19n 194 Precede each line by its line number in the file (first line is 1). 195 .RE 196 197 .sp 198 .ne 2 199 .na 200 \fB\fB-q\fR\fR 201 .ad 202 .RS 19n 203 Quiet. Does not write anything to the standard output, regardless of matching 204 lines. Exits with zero status if an input line is selected. 205 .RE 206 207 .sp 208 .ne 2 209 .na 210 \fB\fB-s\fR\fR 211 .ad 212 .RS 19n 213 Legacy equivalent of \fB-q\fR. 214 .RE 215 216 .sp 217 .ne 2 218 .na 219 \fB\fB-v\fR\fR 220 .ad 221 .RS 19n 222 Print all lines except those that contain the pattern. 223 .RE 224 225 .SS "/usr/xpg4/bin/egrep" 226 .sp 227 .LP 228 The following options are supported for \fB/usr/xpg4/bin/egrep\fR only: 229 .sp 230 .ne 2 231 .na 232 \fB\fB-x\fR\fR 233 .ad 234 .RS 6n 235 Consider only input lines that use all characters in the line to match an 236 entire fixed string or regular expression to be matching lines. 237 .RE 238 239 .SH OPERANDS 240 .sp 241 .LP 242 The following operands are supported: 243 .sp 244 .ne 2 245 .na 246 \fB\fIfile\fR\fR 247 .ad 248 .RS 8n 249 A path name of a file to be searched for the patterns. If no \fIfile\fR 250 operands are specified, the standard input is used. 251 .RE 252 253 .SS "/usr/bin/egrep" 254 .sp 255 .ne 2 256 .na 257 \fB\fIpattern\fR\fR 258 .ad 259 .RS 11n 260 Specify a pattern to be used during the search for input. 261 .RE 262 263 .SS "/usr/xpg4/bin/egrep" 264 .sp 265 .ne 2 266 .na 267 \fB\fIpattern\fR\fR 268 .ad 269 .RS 11n 270 Specify one or more patterns to be used during the search for input. This 271 operand is treated as if it were specified as \fB-e\fR\fIpattern_list.\fR. 272 .RE 273 274 .SH USAGE 275 .sp 276 .LP 277 See \fBlargefile\fR(5) for the description of the behavior of \fBegrep\fR when 278 encountering files greater than or equal to 2 Gbyte ( 2^31 bytes). 279 .SH ENVIRONMENT VARIABLES 280 .sp 281 .LP 282 See \fBenviron\fR(5) for descriptions of the following environment variables 283 that affect the execution of \fBegrep\fR: \fBLC_COLLATE\fR, \fBLC_CTYPE\fR, 284 \fBLC_MESSAGES\fR, and \fBNLSPATH\fR. 285 .SH EXIT STATUS 286 .sp 287 .LP 288 The following exit values are returned: 289 .sp 290 .ne 2 291 .na 292 \fB\fB0\fR\fR 293 .ad 294 .RS 5n 295 If any matches are found. 296 .RE 297 298 .sp 299 .ne 2 300 .na 301 \fB\fB1\fR\fR 302 .ad 303 .RS 5n 304 If no matches are found. 305 .RE 306 307 .sp 308 .ne 2 309 .na 310 \fB\fB2\fR\fR 311 .ad 312 .RS 5n 313 For syntax errors or inaccessible files (even if matches were found). 314 .RE 315 316 .SH ATTRIBUTES 317 .sp 318 .LP 319 See \fBattributes\fR(5) for descriptions of the following attributes: 320 .SS "/usr/bin/egrep" 321 .sp 322 323 .sp 324 .TS 325 box; 326 c | c 327 l | l . 328 ATTRIBUTE TYPE ATTRIBUTE VALUE 329 _ 330 CSI Not Enabled 331 .TE 332 333 .SS "/usr/xpg4/bin/egrep" 334 .sp 335 336 .sp 337 .TS 338 box; 339 c | c 340 l | l . 341 ATTRIBUTE TYPE ATTRIBUTE VALUE 342 _ 343 CSI Enabled 344 .TE 345 346 .SH SEE ALSO 347 .sp 348 .LP 349 \fBfgrep\fR(1), \fBgrep\fR(1), \fBsed\fR(1), \fBsh\fR(1), \fBattributes\fR(5), 350 \fBenviron\fR(5), \fBlargefile\fR(5), \fBregex\fR(5), \fBregexp\fR(5), 351 \fBXPG4\fR(5) 352 .SH NOTES 353 .sp 354 .LP 355 Ideally there should be only one \fBgrep\fR command, but there is not a single 356 algorithm that spans a wide enough range of space-time trade-offs. 357 .sp 358 .LP 359 Lines are limited only by the size of the available virtual memory. 360 .SS "/usr/xpg4/bin/egrep" 361 .sp 362 .LP 363 The \fB/usr/xpg4/bin/egrep\fR utility is identical to \fB/usr/xpg4/bin/grep\fR 364 \fB-E\fR. See \fBgrep\fR(1). Portable applications should use 365 \fB/usr/xpg4/bin/grep\fR \fB-E\fR.