Hi, I am a newb as far as shell scripting and SED goes so bear with me on this one.
I want to basically append to each line in a file a delimiter character and the line's line number e.g
Change the file from :-
aaaaaa
bbbbbb
cccccc
to:-
aaaaaa;1
bbbbbb;2
cccccc;3
I have worked... (4 Replies)
Hi,
I have a huge file & I want to add a specific text in column. But I want to add this text from a specific line number to a specific line number & another text in to another range of line numbers.
To be more specific: lets say my file has 1000 lines & 4 Columns. I want to add text "Hello"... (2 Replies)
Hi Everybody,
I am trying to write a script that will get some perticuler data from a file and redirect to a file.
My Question is,
I have a Very huge file,In that file I have my required data is started from 25th line and it will ends in 100th line.
I know the line numbers, I need to get all... (9 Replies)
I have a set of log files that are in the following format
======= set_1 ========
counter : 315
counter2: 204597
counter3: 290582
======= set_2 ========
counter : 315
counter2: 204597
counter3: 290582
======= set_3 ========
counter : 315
counter2: 204597
counter3: 290582
Is... (6 Replies)
Hello Everyone.
I am trying to display contains of a file from a specific line to a specific line(let say, from line number 3 to line number 5). For this I got the shell script as shown below:
if ; then
if ; then
tail +$1 $3 | head -n $2
else
... (5 Replies)
Hi all,
I have text file having a number P100. what i need is when i run a script, it should add 1 to the above number and append it to the next line of a same text file.. when i use the script next time it should check the last line and add 1 to the last number and so on..
like the text... (5 Replies)
Dear all,
I've a situation here, I have a big file which contains about 20Million line as shown as below
I want to fish out some lines according to the line position of the big file, for example here line number 3,4,7 ...
so the expected output will be like this
currently I manage to... (3 Replies)
Hi,
Anyone help me to print the lines from the flat file between 879th line number and 1424th line number.
The 879 and 1424 should be passed as input to the shell script(It should be dynamic).
Can any one give me using sed or awk?
I tried using read, and print the lines..Its taking too... (3 Replies)
Hello everyone,
I don't really know anything about scripting, but I have to manage to make this script, out of necessity.
#!/bin/bash
while read -r line; do #I'm reading from a big wordlist
instructions using $line
done
Is there a way to automatically write the $line number the script... (4 Replies)
Hi All,
I've a file like this..
Sheet1
a,1
a,2
a,3
a,4
a,5
Sheet2
a,6
a,7
a,8
a,9
a,10
Sheet3
a,11
a,12
a,13 (7 Replies)
Discussion started by: manab86
7 Replies
LEARN ABOUT PLAN9
grep
GREP(1) General Commands Manual GREP(1)NAME
grep - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines (with newlines excluded) that match the pattern, a regular expression as
defined in regexp(6). Normally, each line matching the pattern is `selected', and each selected line is copied to the standard output.
The options are
-c Print only a count of matching lines.
-h Do not print file name tags (headers) with output lines.
-i Ignore alphabetic case distinctions. The implementation folds into lower case all letters in the pattern and input before interpre-
tation. Matched lines are printed in their original form.
-l (ell) Print the names of files with selected lines; don't print the lines.
-L Print the names of files with no selected lines; the converse of -l.
-n Mark each printed line with its line number counted in its file.
-s Produce no output, but return status.
-v Reverse: print lines that do not match the pattern.
Output lines are tagged by file name when there is more than one input file. (To force this tagging, include /dev/null as a file name
argument.)
Care should be taken when using the shell metacharacters $*[^|()= and newline in pattern; it is safest to enclose the entire expression in
single quotes '...'.
SOURCE
/sys/src/cmd/grep.c
SEE ALSO ed(1), awk(1), sed(1), sam(1), regexp(6)DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs.
GREP(1)