After the user inputs the id and hits enter to start the search the program exits and if a match is found there is a new file match.txt. I am not sure how to keep the program open and display a message "searching, please wait" and when a match is found display the line #. Thank you .
I have a file (status.file) of the form:
valueA 3450
valueB -20
valueC -340
valueD 48
I am tailing a data.file, and need to search and modify a value
in status.file...the tail is:
tail -f data.file | awk '{ print $3, ($NF - $(NF-1)) }'
which will produce lines that look like this:
... (3 Replies)
Hi,
I have two files with the format shown below. I need to read first field(value before comma) from file 1 and search for a record in file 2 that has the same value in the field "KEY=" and write the complete record of file 2 with corresponding field 2 of the first file in to result file.
... (11 Replies)
how to grep a file based on another input file
File1
ashu 1 ninetwo hari
qwer 6 givefour jan
fghj 8 noeight mar
vbmi 7 noput feb
--
---
File2
noput
noeight
---
--
Taking the input of grep as File2, a search need to be made in File1 giving File3 as output: (7 Replies)
Ok, I have a script with a commandline option that allows the user to add a custom function to the script file. I have tried everything in my limited knowledge of sed to get this to work and keep coming up short. I need sed to search for a line starting with a pattern, I've got that part so far,... (0 Replies)
Hello I would like to ask for help with a script to search a directory that contains many log files and based on a users input after being prompted, they enter a date range down to the hour which searches the files that contain that range.
I dont know how to go about this. I am hoping that the... (5 Replies)
Hi All,
I am very new to UNIX and I have tried this for a longtime now and unable to crack it....
There is a file that is continuously updating. I need to search for the string and find the date @ which it updated every day.....
eg:
String is "work started"
The log entry is as below:
... (1 Reply)
Hi,
Below is my requirement
File1:
svasjsdhvassdvasdhhgvasddhvasdhasdjhvasdjsahvasdjvdasjdvvsadjhv
vdjvsdjasvdasdjbasdjbasdjhasbdasjhdbjheasbdasjdsajhbjasbjasbhddjb
svfsdhgvfdshgvfsdhfvsdadhfvsajhvasjdhvsajhdvsadjvhasjhdvjhsadjahs
File2:
sdh
hgv
I need a command such that... (8 Replies)
Hi Gurus,
I am SQL developer and new unix user.
I need to create some file and file content based on information in two files.
I have one file contains basic information below file1 and another exception file file2. the rule is if "zone' and "cd" in file1 exists in file2, then file name is... (13 Replies)
I am trying to create a bash script that will create new function by using the user input. The below will create the necessary files in the correct format, however when it comes to the # create function I am at a loss.
If the name entered was NEWNAME and the genes were GENE1,GENE2 then two files... (0 Replies)
Discussion started by: cmccabe
0 Replies
LEARN ABOUT V7
grep
GREP(1) General Commands Manual GREP(1)NAME
grep, egrep, fgrep - search a file for a pattern
SYNOPSIS
grep [ option ] ... expression [ file ] ...
egrep [ option ] ... [ expression ] [ file ] ...
fgrep [ option ] ... [ strings ] [ file ]
DESCRIPTION
Commands of the grep family search the input files (standard input default) for lines matching a pattern. Normally, each line found is
copied to the standard output; unless the -h flag is used, the file name is shown if there is more than one input file.
Grep patterns are limited regular expressions in the style of ed(1); it uses a compact nondeterministic algorithm. Egrep patterns are full
regular expressions; it uses a fast deterministic algorithm that sometimes needs exponential space. Fgrep patterns are fixed strings; it
is fast and compact.
The following options are recognized.
-v All lines but those matching are printed.
-c Only a count of matching lines is printed.
-l The names of files with matching lines are listed (once) separated by newlines.
-n Each line is preceded by its line number in the file.
-b Each line is preceded by the block number on which it was found. This is sometimes useful in locating disk block numbers by con-
text.
-s No output is produced, only status.
-h Do not print filename headers with output lines.
-y Lower case letters in the pattern will also match upper case letters in the input (grep only).
-e expression
Same as a simple expression argument, but useful when the expression begins with a -.
-f file
The regular expression (egrep) or string list (fgrep) is taken from the file.
-x (Exact) only lines matched in their entirety are printed (fgrep only).
Care should be taken when using the characters $ * [ ^ | ? ' " ( ) and in the expression as they are also meaningful to the Shell. It is
safest to enclose the entire expression argument in single quotes ' '.
Fgrep searches for lines that contain one of the (newline-separated) strings.
Egrep accepts extended regular expressions. In the following description `character' excludes newline:
A followed by a single character matches that character.
The character ^ ($) matches the beginning (end) of a line.
A . matches any character.
A single character not otherwise endowed with special meaning matches that character.
A string enclosed in brackets [] matches any single character from the string. Ranges of ASCII character codes may be abbreviated
as in `a-z0-9'. A ] may occur only as the first character of the string. A literal - must be placed where it can't be mistaken as
a range indicator.
A regular expression followed by * (+, ?) matches a sequence of 0 or more (1 or more, 0 or 1) matches of the regular expression.
Two regular expressions concatenated match a match of the first followed by a match of the second.
Two regular expressions separated by | or newline match either a match for the first or a match for the second.
A regular expression enclosed in parentheses matches a match for the regular expression.
The order of precedence of operators at the same parenthesis level is [] then *+? then concatenation then | and newline.
SEE ALSO ed(1), sed(1), sh(1)DIAGNOSTICS
Exit status is 0 if any matches are found, 1 if none, 2 for syntax errors or inaccessible files.
BUGS
Ideally there should be only one grep, but we don't know a single algorithm that spans a wide enough range of space-time tradeoffs.
Lines are limited to 256 characters; longer lines are truncated.
GREP(1)