inputfile:
A B C D
E F G H
1 2 3 4
-----------
I want to read these and put them into a variable:
file=../inputfile
col2line1=`cat $file | awk '{print $2}'`
how do i extract row 2's E,F,G,H or row 3's 1,2,3,4???
I tried the search, didn't get much, maybe i suck at searching too... (4 Replies)
Hi,
I am having huge file with the following lines.
2007:10:01:00:00:49:GMT: subject=BMRA.BM.T_ABTH7.FPN, message={SD=2007:10:01:00:00:00:GMT,SP=5,NP=2,TS=2007:10:01:01:00:00:GMT,VP=0.0,TS=2007:10:01:01:30:00:GMT,VP=0.0}
2007:10:01:00:00:49:GMT: subject=BMRA.BM.T_ABTH7G.FPN,... (9 Replies)
I have a data file in the following format (refer to input file) with multiple lines containing some information. I need an output file to loop thorough the input file with summarized information as seen below (refer to output file) ‘Date Time' and ‘Beta Id' input file values should be concatenated... (7 Replies)
I need help to parse a file where there are many records, all of which are consistently separated by lines containing “^=============” and "^ End of Report".
Example:
=============
1
2
3
4
End of record
=============
1
3
4
End of record
Etc....
I only need specific lines... (5 Replies)
Hi
I have a set of options in the form of key value in a file. Need to find a particular value of 'a' and delete all lines till the next 'a' keyword .
Ex :
a bbb
c ddd
e fff
g hhh
a sss
c ggg
e xxx
f sss
a ddd
d sss
r sss
g hhh (5 Replies)
Hi!
I'm trying to create a shell script to parse a file which might have multiple lines matching a pattern (i.e. containing some word).
I need to return all lines matching the pattern, but stripping the contents of that line until the pattern is matched
For example, if my input file was
... (4 Replies)
Hello,
For the life of me, I can't figure out how to extract only certain lines of a file. For example, the file contains:
project.max-sem-ids
privileged 1.02K - deny -
system 16.8M max deny ... (2 Replies)
Hi All,
I need help on the following req.
I am getting output of a command as follows:
16377612 total memory
3802460 used memory
2827076 active memory
681948 inactive memory
12575152 free memory
477452 buffer memory
I want to compute used... (1 Reply)
Hi,
I have an input file like
F : 0.1 : 0.002
P : 0.3 : 0.004
P : 0.5 : 0.008
P : 0.1 : 0.005
L : 0.05 : 0.02
P: 0.1 : 0.006
P : 0.01 : 0.08
F : 0.02 : 0.08
Expected output: (2 Replies)
What is the correct syntax to have the awk parse the next line as well? The next in bold is where I think it should go, but I wanted to ask the experts since I am a beginner. The file to be parsed is attached as well. Thank you :).
awk 'NR==2 {split($2,a,"");b=substr(a,1,length(a-1));print... (6 Replies)
Discussion started by: cmccabe
6 Replies
LEARN ABOUT V7
diff
DIFF(1) General Commands Manual DIFF(1)NAME
diff - differential file comparator
SYNOPSIS
diff [ -efbh ] file1 file2
DESCRIPTION
Diff tells what lines must be changed in two files to bring them into agreement. If file1 (file2) is `-', the standard input is used. If
file1 (file2) is a directory, then a file in that directory whose file-name is the same as the file-name of file2 (file1) is used. The
normal output contains lines of these forms:
n1 a n3,n4
n1,n2 d n3
n1,n2 c n3,n4
These lines resemble ed commands to convert file1 into file2. The numbers after the letters pertain to file2. In fact, by exchanging `a'
for `d' and reading backward one may ascertain equally how to convert file2 into file1. As in ed, identical pairs where n1 = n2 or n3 = n4
are abbreviated as a single number.
Following each of these lines come all the lines that are affected in the first file flagged by `<', then all the lines that are affected
in the second file flagged by `>'.
The -b option causes trailing blanks (spaces and tabs) to be ignored and other strings of blanks to compare equal.
The -e option produces a script of a, c and d commands for the editor ed, which will recreate file2 from file1. The -f option produces a
similar script, not useful with ed, in the opposite order. In connection with -e, the following shell program may help maintain multiple
versions of a file. Only an ancestral file ($1) and a chain of version-to-version ed scripts ($2,$3,...) made by diff need be on hand. A
`latest version' appears on the standard output.
(shift; cat $*; echo '1,$p') | ed - $1
Except in rare circumstances, diff finds a smallest sufficient set of file differences.
Option -h does a fast, half-hearted job. It works only when changed stretches are short and well separated, but does work on files of
unlimited length. Options -e and -f are unavailable with -h.
FILES
/tmp/d?????
/usr/lib/diffh for -h
SEE ALSO cmp(1), comm(1), ed(1)DIAGNOSTICS
Exit status is 0 for no differences, 1 for some, 2 for trouble.
BUGS
Editing scripts produced under the -e or -f option are naive about creating lines consisting of a single `.'.
DIFF(1)