Sponsored Content
Top Forums Shell Programming and Scripting Grep pattern only and surrounding lines Post 302978041 by jacobs.smith on Monday 25th of July 2016 01:43:48 PM
Old 07-25-2016
Amazing! Thank you!
This User Gave Thanks to jacobs.smith For This Post:
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

How can you show lines surrounding a search string?

I would like to be able to grep (or some such thing) a search argument and then display the line plus the preceding 3 lines of the file and the following 3 lines of the file. Any ideas? Thanks in advance! :D (3 Replies)
Discussion started by: robster
3 Replies

2. Shell Programming and Scripting

how to get surrounding lines of grep result

hi, if i have a file and i want to search for the word error using grep, i usually want to see the surrounding lines too as they contain info about the error. what would be a nice way to achieve this? thanks (6 Replies)
Discussion started by: JamesByars
6 Replies

3. UNIX for Dummies Questions & Answers

Grep with 8 lines before and after pattern.

OK. I have a file I'd like to be able to grep, but on top of returning the line where the pattern matches, I'd like to be able to get the previous 8 lines and the following 8 lines. Is there a way to do this? (2 Replies)
Discussion started by: mrwatkin
2 Replies

4. Shell Programming and Scripting

how to get surrounding lines of my grep search?

hi, if I grep a file, sometimes I want to see as an eg 2 lines above and below my grep results. how can this be done thanks (3 Replies)
Discussion started by: JamesByars
3 Replies

5. Shell Programming and Scripting

Print the above and below lines for the grep pattern.

Hi, i would like to get the above and below lines of the grep pattern . For ex : file as below: chk1- aaaa 1-Nov chk2 -aaaa ########## chk1-bbbbbb 1-Nov chk2-bbbbbb ######### my search pattern is date : 1-Nov i need the o/p as below chk1- aaaa 1-Nov (6 Replies)
Discussion started by: expert
6 Replies

6. Shell Programming and Scripting

Possible to grep string based on surrounding strings?

I was wondering if it was possible to grep a pattern based on the surround text. For example, if i have an input file like this: titleA titleB titlex titleC titleD titlex titleE And I want to grep "title" and save the results only if it is not followed with a "titlex". My output... (14 Replies)
Discussion started by: jl487
14 Replies

7. Shell Programming and Scripting

Grep the word from pattern line and update in subsequent lines till next pattern line reached

Hi, I have got the below requirement. please suggest. I have a file like, Processing Item is: /data/ing/cfg2/abc.txt /data/ing/cfg3/bgc.txt Processing Item is: /data/cmd/for2/ght.txt /data/kernal/config.klgt.txt I want to process the above file to get the output file like, ... (5 Replies)
Discussion started by: rbalaj16
5 Replies

8. Shell Programming and Scripting

Grep lines before a pattern having some other pattern

Hi All, I am trying to fetch lines before a pattern, I got to know about -B flag in grep but we have to pass the number to get those lines before some pattern say (X), now what if I want to get line/s with some other pattern say (Y) before X pattern? How to get about it? please help. Input:... (5 Replies)
Discussion started by: dips_ag
5 Replies

9. UNIX for Dummies Questions & Answers

Grep -v lines starting with pattern 1 and not matching pattern 2

Hi all! Thanks for taking the time to view this! I want to grep out all lines of a file that starts with pattern 1 but also does not match with the second pattern. Example: Drink a soda Eat a banana Eat multiple bananas Drink an apple juice Eat an apple Eat multiple apples I... (8 Replies)
Discussion started by: demmel
8 Replies

10. Shell Programming and Scripting

Grep all lines with the pattern .sh

Linux version : Oracle Linux 6.5 Shell : bash In the the below text file (someString.text), I want to grep all lines with .sh in it. ie. Only the lines mysript.sh and anotherscript.sh should be returned. My below attempts failed. I gather that in regular expression world, dot (.) is the... (3 Replies)
Discussion started by: John K
3 Replies
man(1)								   User Commands							    man(1)

NAME
man - find and display reference manual pages SYNOPSIS
man [-] [-adFlrt] [-M path] [-T macro-package] [-s section] name... man [-M path] -k keyword... man [-M path] -f file... DESCRIPTION
The man command displays information from the reference manuals. It displays complete manual pages that you select by name, or one-line summaries selected either by keyword (-k), or by the name of an associated file (-f). If no manual page is located, man prints an error message. Source Format Reference Manual pages are marked up with either nroff (see nroff(1)) or SGML (Standard Generalized Markup Language) tags (see sgml(5)). The man command recognizes the type of markup and processes the file accordingly. The various source files are kept in separate directories depending on the type of markup. Location of Manual Pages The online Reference Manual page directories are conventionally located in /usr/share/man. The nroff sources are located in the /usr/share/man/man* directories. The SGML sources are located in the /usr/share/man/sman* directories. Each directory corresponds to a sec- tion of the manual. Since these directories are optionally installed, they might not reside on your host. You might have to mount /usr/share/man from a host on which they do reside. If there are preformatted, up-to-date versions in the corresponding cat* or fmt* directories, man simply displays or prints those versions. If the preformatted version of interest is out of date or missing, man reformats it prior to display and stores the preformatted version if cat* or fmt* is writable. The windex database is not updated. See catman(1M). If directories for the preformatted versions are not pro- vided, man reformats a page whenever it is requested. man uses a temporary file to store the formatted text during display. If the standard output is not a terminal, or if the `-' flag is given, man pipes its output through cat(1). Otherwise, man pipes its output through more(1) to handle paging and underlining on the screen. OPTIONS
The following options are supported: -a Shows all manual pages matching name within the MANPATH search path. Manual pages are displayed in the order found. -d Debugs. Displays what a section-specifier evaluates to, method used for searching, and paths searched by man. -f file ... man attempts to locate manual pages related to any of the given files. It strips the leading path name components from each file, and then prints one-line summaries containing the resulting basename or names. This option also uses the windex database. -F Forces man to search all directories specified by MANPATH or the man.cf file, rather than using the windex lookup data- base. This option is useful if the database is not up to date and it has been made the default behavior of the man com- mand. The option therefore does not have to be invoked and is documented here for reference only. -k keyword ... Prints out one-line summaries from the windex database (table of contents) that contain any of the given keywords. The windex database is created using catman(1M). -l Lists all manual pages found matching name within the search path. -M path Specifies an alternate search path for manual pages. path is a colon-separated list of directories that contain manual page directory subtrees. For example, if path is /usr/share/man:/usr/local/man, man searches for name in the standard location, and then /usr/local/man. When used with the -k or -f options, the -M option must appear first. Each directory in the path is assumed to contain subdirectories of the form man* or sman* , one for each section. This option over- rides the MANPATH environment variable. -r Reformats the manual page, but does not display it. This replaces the man - -t name combination. -s section ... Specifies sections of the manual for man to search. The directories searched for name are limited to those specified by section. section can be a numerical digit, perhaps followed by one or more letters to match the desired section of the manual, for example, "3libucb". Also, section can be a word, for example, local, new, old, public. section can also be a letter. To specify multiple sections, separate each section with a comma. This option overrides the MANPATH environ- ment variable and the man.cf file. See Search Path below for an explanation of how man conducts its search. -t man arranges for the specified manual pages to be troffed to a suitable raster output device (see troff(1)). If both the - and -t flags are given, man updates the troffed versions of each named name (if necessary), but does not display them. -T macro-package Formats manual pages using macro-package rather than the standard -man macros defined in /usr/share/lib/tmac/an. See Search Path under USAGE for a complete explanation of the default search path order. OPERANDS
The following operand is supported: name The name of a standard utility or a keyword. USAGE
The usage of man is described below: Manual Page Sections Entries in the reference manuals are organized into sections. A section name consists of a major section name, typically a single digit, optionally followed by a subsection name, typically one or more letters. An unadorned major section name, for example, "9", does not act as an abbreviation for the subsections of that name, such as "9e", "9f", or "9s". That is, each subsection must be searched separately by man -s. Each section contains descriptions apropos to a particular reference category, with subsections refining these distinctions. See the intro manual pages for an explanation of the classification used in this release. Search Path Before searching for a given name, man constructs a list of candidate directories and sections. man searches for name in the directories specified by the MANPATH environment variable. In the absence of MANPATH, man constructs its search path based upon the PATH environment variable, primarily by substituting man for the last component of the PATH element. Special provisions are added to account for unique characteristics of directories such as /sbin, /usr/ucb, /usr/xpg4/bin, and others. If the file argument contains a / character, the dirname portion of the argument is used in place of PATH elements to construct the search path. Within the manual page directories, man confines its search to the sections specified in the following order: o sections specified on the command line with the -s option o sections embedded in the MANPATH environment variable o sections specified in the man.cf file for each directory specified in the MANPATH environment variable If none of the above exist, man searches each directory in the manual page path, and displays the first matching manual page found. The man.cf file has the following format: MANSECTS=section[,section]... Lines beginning with `#' and blank lines are considered comments, and are ignored. Each directory specified in MANPATH can contain a manual page configuration file, specifying the default search order for that directory. FORMATTING MANUAL PAGES
Manual pages are marked up in nroff(1) or sgml(5). Nroff manual pages are processed by nroff(1) or troff(1) with the -man macro package. Please refer to man(5) for information on macro usage. SGML--tagged manual pages are processed by an SGML parser and passed to the format- ter. Preprocessing Nroff Manual Pages When formatting an nroff manual page, man examines the first line to determine whether it requires special processing. If the first line is a string of the form: '" X where X is separated from the `"' by a single SPACE and consists of any combination of characters in the following list, man pipes its input to troff(1) or nroff(1) through the corresponding preprocessors. e eqn(1), or neqn for nroff r refer(1) t tbl(1) v vgrind(1) If eqn or neqn is invoked, it automatically reads the file /usr/pub/eqnchar (see eqnchar(5)). If nroff(1) is invoked, col(1) is automati- cally used. Referring to Other nroff Manual Pages If the first line of the nroff manual page is a reference to another manual page entry fitting the pattern: .so man*/sourcefile man processes the indicated file in place of the current one. The reference must be expressed as a path name relative to the root of the manual page directory subtree. When the second or any subsequent line starts with .so, man ignores it; troff(1) or nroff(1) processes the request in the usual manner. Processing SGML Manual Pages Manual pages are identified as being marked up in SGML by the presence of the string <!DOCTYPE. If the file also contains the string SHADOW_PAGE, the file refers to another manual page for the content. The reference is made with a file entity reference to the manual page that contains the text. This is similar to the .so mechanism used in the nroff formatted man pages. ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of man: LANG, LC_ALL, LC_CTYPE, LC_MES- SAGES, and NLSPATH. MANPATH A colon-separated list of directories; each directory can be followed by a comma-separated list of sections. If set, its value overrides /usr/share/man as the default directory search path, and the man.cf file as the default section search path. The -M and -s flags, in turn, override these values.) PAGER A program to use for interactively delivering man's output to the screen. If not set, `more -s' is used. See more(1). TCAT The name of the program to use to display troffed manual pages. TROFF The name of the formatter to use when the -t flag is given. If not set, troff(1) is used. EXAMPLES
Example 1 Creating a PostScript Version of a man page The following example creates the pipe(2) man page in postscript for csh, tcsh, ksh and sh users: % env TCAT=/usr/lib/lp/postscript/dpost man -t -s 2 pipe > pipe.ps This is an alternative to using man -t, which sends the man page to the default printer, if the user wants a postscript file version of the man page. Example 2 Creating a Text Version of a man page The following example creates the pipe(2) man page in ascii text: man pipe.2 | col -x -b > pipe.text This is an alternative to using man -t, which sends the man page to the default printer, if the user wants a text file version of the man page. EXIT STATUS
The following exit values are returned: 0 Successful completion. >0 An error occurred. FILES
/usr/share/man Root of the standard manual page directory subtree /usr/share/man/man?/* Unformatted nroff manual entries /usr/share/man/sman?/* Unformatted SGML manual entries /usr/share/man/cat?/* nroffed manual entries /usr/share/man/fmt?/* troffed manual entries /usr/share/man/windex Table of contents and keyword database /usr/share/lib/tmac/an Standard -man macro package /usr/share/lib/sgml/locale/C/dtd/* SGML document type definition files /usr/share/lib/sgml/locale/C/solbook/* SGML style sheet and entity definitions directories /usr/share/lib/pub/eqnchar Standard definitions for eqn and neqn man.cf Default search order by section ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWdoc | +-----------------------------+-----------------------------+ |CSI |Enabled, see NOTES. | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+ |Standard |See standards(5). | +-----------------------------+-----------------------------+ SEE ALSO
apropos(1), cat(1), col(1), dpost(1), eqn(1), more(1), nroff(1), refer(1), tbl(1), troff(1), vgrind(1), whatis(1), catman(1M), attributes(5), environ(5), eqnchar(5), man(5), sgml(5), standards(5) NOTES
The -f and -k options use the windex database, which is created by catman(1M). The man command is CSI-capable. However, some utilities invoked by the man command, namely, troff, eqn, neqn, refer, tbl, and vgrind, are not verified to be CSI-capable. Because of this, the man command with the -t option can not handle non-EUC data. Also, using the man com- mand to display man pages that require special processing through eqn, neqn, refer, tbl, or vgrind can not be CSI-capable. BUGS
The manual is supposed to be reproducible either on a phototypesetter or on an ASCII terminal. However, on a terminal some information (indicated by font changes, for instance) is lost. Some dumb terminals cannot process the vertical motions produced by the e (see eqn(1)) preprocessing flag. To prevent garbled output on these terminals, when you use e, also use t, to invoke col(1) implicitly. This workaround has the disadvantage of eliminating superscripts and subscripts, even on those terminals that can display them. Control-q clears a terminal that gets confused by eqn(1) output. SunOS 5.11 8 May 2008 man(1)
All times are GMT -4. The time now is 01:13 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy