Grep is a tool that searches for a basic or extended regular expression, or fixed pattern, but does no replacement of text. The -v option should be thought of as inverted output rather than deletion; it causes the lines without the expression to be written to stdout rather than the lines with the expression.
In my opnion, this is a job for sed:
Will replace all occurrences of CEU on every line with nothing.
grep for a particular pattern and remove 5 lines above the pattern and 6 lines below the pattern
root@server1 # cat filename
Shell Programming and Scripting test1
Shell Programminsada asda
dasd asd Shell Programming and Scripting Post New Thread
Shell Programming and S sadsa ... (17 Replies)
Hi,
I have a file with values,
file1:
BELL-1180-1180-81|577:1017|
BELL-1180-1180-81|jm10i-auto-stub1/577:102|
BELL-1180-1180-81|jm10i-auto-stub1/577:101|
BELL-1180-1180-81|jm10i-auto-stub1/577:1700|
BELL-1180-1180-81|jm10i-auto-stub1/577:1699|
I need to remove the lines which has... (9 Replies)
Hi,
I'm not a expert in shell programming, so i've come here to take help from u gurus.
I'm trying to tailor a csv file that i got to make it work for the LOAD FROM command.
I've a datatable csv of the below format -
--in file format
xx,xx,xx ,xx , , , , ,,xx,
xxxx,, ,, xxx,... (11 Replies)
The following grep command grep -v "^$" filename > newfilename does not populate the new file with any data. I see it search the entire input file but the output file never gets filled. Is this not the correct command for what Im looking to do? (2 Replies)
I would like to use grep to remove certain strings from a text file but I can't use the grep -v option because it removes the whole line that includes the string whereas I just want to remove the string. How do I go about doing that?
My input file:
Magmas CEU
rs12542019 CPNE1
RBM12 CEU... (1 Reply)
Hi,
I have a huge file which has Lacs of lines. File system got full.
I want your guys help to suggest me a solution so that I can remove all lines from that file but not last 50,000 lines. I want solution which can remove lines from existing file so that I can have some space left with. (28 Replies)
I have two files, a keepout.txt and a database.csv. They're unsorted, but could be sorted.
keepout:
user1
buser3
anuser19
notheruser27
database:
user1,2343,"information about",field,blah,34
user2,4231,"mo info",etc,stuff,43
notheruser27,4344,"hiya",thing,more thing,423... (4 Replies)
I have been searching and trying to come up with an awk that will perform the following on a
converted text file (original is a pdf).
1. Since the first two lines are (begin with) text they are removed
2. if $1 is a number then all text is merged (combined) into one line until the next... (3 Replies)
Hello all,
I need to filter a dataframe composed of several columns of data to remove the duplicates according to one of the columns. I did it with pandas. In the main time, I need that the last column that contains all different data ( not redundant) is conserved in the output like this:
A ... (5 Replies)
Discussion started by: pedro88
5 Replies
LEARN ABOUT MINIX
grep
GREP(1) General Commands Manual GREP(1)NAME
grep - search a file for lines containing a given pattern
SYNOPSIS
grep [-elnsv] pattern [file] ...
OPTIONS -e-e pattern is the same as pattern
-c Print a count of lines matched
-i Ignore case
-l Print file names, no lines
-n Print line numbers
-s Status only, no printed output
-v Select lines that do not match
EXAMPLES
grep mouse file # Find lines in file containing mouse
grep [0-9] file # Print lines containing a digit
DESCRIPTION
Grep searches one or more files (by default, stdin) and selects out all the lines that match the pattern. All the regular expressions
accepted by ed and mined are allowed. In addition, + can be used instead of * to mean 1 or more occurrences, ? can be used to mean 0 or 1
occurrences, and | can be used between two regular expressions to mean either one of them. Parentheses can be used for grouping. If a
match is found, exit status 0 is returned. If no match is found, exit status 1 is returned. If an error is detected, exit status 2 is
returned.
SEE ALSO cgrep(1), fgrep(1), sed(1), awk(9).
GREP(1)