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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 "Mar 24, 2006" 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-bchilnsv\fR] \fB-e\fR \fIpattern_list\fR [\fIfile...\fR] 19 .fi 20 21 .LP 22 .nf 23 \fB/usr/bin/egrep\fR [\fB-bchilnsv\fR] \fB-f\fR \fIfile\fR [\fIfile...\fR] 24 .fi 25 26 .LP 27 .nf 28 \fB/usr/bin/egrep\fR [\fB-bchilnsv\fR] \fIpattern\fR [\fIfile...\fR] 29 .fi 30 31 .LP 32 .nf 33 \fB/usr/xpg4/bin/egrep\fR [\fB-bchilnqsvx\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-bchilnqsvx\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-bchilnqsvx\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 Suppress printing of filenames when searching multiple files. 158 .RE 159 160 .sp 161 .ne 2 162 .na 163 \fB\fB-i\fR\fR 164 .ad 165 .RS 19n 166 Ignore upper/lower case distinction during comparisons. 167 .RE 168 169 .sp 170 .ne 2 171 .na 172 \fB\fB-l\fR\fR 173 .ad 174 .RS 19n 175 Print the names of files with matching lines once, separated by NEWLINEs. Does 176 not repeat the names of files when the pattern is found more than once. 177 .RE 178 179 .sp 180 .ne 2 181 .na 182 \fB\fB-n\fR\fR 183 .ad 184 .RS 19n 185 Precede each line by its line number in the file (first line is 1). 186 .RE 187 188 .sp 189 .ne 2 190 .na 191 \fB\fB-s\fR\fR 192 .ad 193 .RS 19n 194 Work silently, that is, display nothing except error messages. This is useful 195 for checking the error status. 196 .RE 197 198 .sp 199 .ne 2 200 .na 201 \fB\fB-v\fR\fR 202 .ad 203 .RS 19n 204 Print all lines except those that contain the pattern. 205 .RE 206 207 .SS "/usr/xpg4/bin/egrep" 208 .sp 209 .LP 210 The following options are supported for \fB/usr/xpg4/bin/egrep\fR only: 211 .sp 212 .ne 2 213 .na 214 \fB\fB-q\fR\fR 215 .ad 216 .RS 6n 217 Quiet. Does not write anything to the standard output, regardless of matching 218 lines. Exits with zero status if an input line is selected. 219 .RE 220 221 .sp 222 .ne 2 223 .na 224 \fB\fB-x\fR\fR 225 .ad 226 .RS 6n 227 Consider only input lines that use all characters in the line to match an 228 entire fixed string or regular expression to be matching lines. 229 .RE 230 231 .SH OPERANDS 232 .sp 233 .LP 234 The following operands are supported: 235 .sp 236 .ne 2 237 .na 238 \fB\fIfile\fR\fR 239 .ad 240 .RS 8n 241 A path name of a file to be searched for the patterns. If no \fIfile\fR 242 operands are specified, the standard input is used. 243 .RE 244 245 .SS "/usr/bin/egrep" 246 .sp 247 .ne 2 248 .na 249 \fB\fIpattern\fR\fR 250 .ad 251 .RS 11n 252 Specify a pattern to be used during the search for input. 253 .RE 254 255 .SS "/usr/xpg4/bin/egrep" 256 .sp 257 .ne 2 258 .na 259 \fB\fIpattern\fR\fR 260 .ad 261 .RS 11n 262 Specify one or more patterns to be used during the search for input. This 263 operand is treated as if it were specified as \fB-e\fR\fIpattern_list.\fR. 264 .RE 265 266 .SH USAGE 267 .sp 268 .LP 269 See \fBlargefile\fR(5) for the description of the behavior of \fBegrep\fR when 270 encountering files greater than or equal to 2 Gbyte ( 2^31 bytes). 271 .SH ENVIRONMENT VARIABLES 272 .sp 273 .LP 274 See \fBenviron\fR(5) for descriptions of the following environment variables 275 that affect the execution of \fBegrep\fR: \fBLC_COLLATE\fR, \fBLC_CTYPE\fR, 276 \fBLC_MESSAGES\fR, and \fBNLSPATH\fR. 277 .SH EXIT STATUS 278 .sp 279 .LP 280 The following exit values are returned: 281 .sp 282 .ne 2 283 .na 284 \fB\fB0\fR\fR 285 .ad 286 .RS 5n 287 If any matches are found. 288 .RE 289 290 .sp 291 .ne 2 292 .na 293 \fB\fB1\fR\fR 294 .ad 295 .RS 5n 296 If no matches are found. 297 .RE 298 299 .sp 300 .ne 2 301 .na 302 \fB\fB2\fR\fR 303 .ad 304 .RS 5n 305 For syntax errors or inaccessible files (even if matches were found). 306 .RE 307 308 .SH ATTRIBUTES 309 .sp 310 .LP 311 See \fBattributes\fR(5) for descriptions of the following attributes: 312 .SS "/usr/bin/egrep" 313 .sp 314 315 .sp 316 .TS 317 box; 318 c | c 319 l | l . 320 ATTRIBUTE TYPE ATTRIBUTE VALUE 321 _ 322 CSI Not Enabled 323 .TE 324 325 .SS "/usr/xpg4/bin/egrep" 326 .sp 327 328 .sp 329 .TS 330 box; 331 c | c 332 l | l . 333 ATTRIBUTE TYPE ATTRIBUTE VALUE 334 _ 335 CSI Enabled 336 .TE 337 338 .SH SEE ALSO 339 .sp 340 .LP 341 \fBfgrep\fR(1), \fBgrep\fR(1), \fBsed\fR(1), \fBsh\fR(1), \fBattributes\fR(5), 342 \fBenviron\fR(5), \fBlargefile\fR(5), \fBregex\fR(5), \fBregexp\fR(5), 343 \fBXPG4\fR(5) 344 .SH NOTES 345 .sp 346 .LP 347 Ideally there should be only one \fBgrep\fR command, but there is not a single 348 algorithm that spans a wide enough range of space-time trade-offs. 349 .sp 350 .LP 351 Lines are limited only by the size of the available virtual memory. 352 .SS "/usr/xpg4/bin/egrep" 353 .sp 354 .LP 355 The \fB/usr/xpg4/bin/egrep\fR utility is identical to \fB/usr/xpg4/bin/grep\fR 356 \fB-E\fR. See \fBgrep\fR(1). Portable applications should use 357 \fB/usr/xpg4/bin/grep\fR \fB-E\fR.