extracting lines from a file Post: 302172264

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1. Shell Programming and Scripting

Help required regarding Extracting lines from a file

I have a file containing the following contents All of us, including Zippy, our dog All of us, including Zippy and Zippy All of us, including Zippy and Zippy and Zelda Testing All of us Zippy Now, i wanna grep and get the lines which has only one occurance of word Zippy and starting with...

2. Shell Programming and Scripting

extracting lines from a file

Hi all, I need to extract some lines from a file based on a condition. For ex: My file will contain 50 lines and i need to extract line which has "File" in it and then the line which has "date" in it. Which command will be the most efficient way to do it. I have tried two ways 1....

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Extracting the lines between 2 strings of a file

Hi, I have a sql file and i need to extract the table names used in the sql file using a unix script. If i can extract the lines between the keywords 'FROM' and 'WHERE' in the file, my job is done. can somebody tell me how to do this using a shell script. If u can just let me know, how to...

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extracting unique lines from text file

I have a file with 14million lines and I would like to extract all the unique lines from the file into another text file. For example: Contents of file1 happy sad smile happy funny sad I want to run a command against file one that only returns the unique lines (ie 1 line for happy...

5. Shell Programming and Scripting

Extracting lines in file based on time

Hi, anyone has any ideas on how do we extract lines from a file with format similiar to this: (based on current time) Jun 18 00:16:50 .......... ............. ............ Jun 18 00:17:59 .......... ............. ............ Jun 18 01:17:20 .......... ............. ............ Jun 18...

6. Shell Programming and Scripting

extracting specific lines from a file

hi all, i searched in unix.com and accquired the following commands for extracting specific lines from a file .. sed -n '16482,16482p' in.sql > out.sql awk 'NR>=10&&NR<=20' in.sql > out.sql.... these commands are working fine if i give the line numbers as such .. but if i pass a...

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Extracting Lines in a file

Hi, We have a file where we need to extract the lines of a file based on the first three characters of every line in that file. Eg: RAM hill station SAM student RAM rose SAM apple RAM india SAM australia RAM happy RAM heaven SAM smile RAM glow So, all the lines that start...

8. Shell Programming and Scripting

Extracting specific lines of data from a file and related lines of data based on a grep value range?

Hi, I have one file, say file 1, that has data like below where 19900107 is the date, 19900107 12 144 129 0.7380047 19900108 12 168 129 0.3149017 19900109 12 192 129 3.2766666E-02 ...

9. Shell Programming and Scripting

extracting lines from a file with similar first name

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extracting block of lines from a file

consider the input file which i am dealing with looks like this.. #cat 11.sql create table abc ( . . . ) engine=Innodb ; . . etc . . . create table UsM ( blah blah blah ) engine=Innodb ;

LEARN ABOUT REDHAT

prunehistory

PRUNEHISTORY(8) 					      System Manager's Manual						   PRUNEHISTORY(8)

NAME

       prunehistory - remove file names from Usenet history file

SYNOPSIS

       prunehistory [ -f filename ] [ -p ]

DESCRIPTION

       Prunehistory  modifies  the  history(5)	text file to ``remove'' a set of filenames from it.  The filenames are removed by overwriting them
       with spaces, so that the size and position of any following entries does not change.

       Prunehistory reads the standard input.  The input is taken as a set of lines.  Blank lines and lines starting with a  number  sign  (``#'')
       are ignored.  All other lines are should consist of a Message-ID followed by zero or more filenames.

       The  Message-ID	is  used as the dbz(3) key to get an offset into the text file.  If no filenames are mentioned on the input line, then all
       filenames in the text are ``removed.''  If any filenames are mentioned, they are converted into the history file notation.  If they  appear
       in the line for the specified Message-ID then they are removed.

       Since innd(8) only appends to the text file, prunehistory does not need to have any interaction with it.

OPTIONS

       -p     Prunehistory will normally complain about lines that do not follow the correct format.  If the ``-p'' flag is used, then the program
	      will silently print any invalid lines on its standard output.  (Blank lines and comment lines are also passed through.)  This can be
	      useful when prunehistory is used as a filter for other programs such as reap.

       -f     The default name of the history file is <pathdb in inn.conf>/history; to specify a different name, use the ``-f'' flag.

HISTORY

       Written by Rich $alz <rsalz@uunet.uu.net> for InterNetNews.  This is revision 1.7, dated 1998/04/09.

SEE ALSO

       dbz(3), history(5), inn.conf(5), innd(8).

																   PRUNEHISTORY(8)