Hi,
I need to remove lines from a text file that are less than certain length in UNIX. For example, test.txt file contains the following lines:
abcdefghijklmnopqrstuvwxyz.
123456789009876543211234567
This line to be removed.
zyxwvutsrqponmlkjihgfedcba.
The length of each line is supposed... (5 Replies)
I am a new unix user & I wanted to work with unix as it is very good in text manipulations. I need a little help. I will be grateful if someone can help me out.
I need help in grepping a pattern of numbers from one file to another file. Specific details are as follows:
File one contains only... (4 Replies)
What I am trying to do is make a script that will add a port number within a section of a file if it already doesn't exist in that section of the file. The particular line that I would like to add the port number to in the file is formatted like this:
TCPPORTS="25 80 125 443 8080 10000"
For... (3 Replies)
Hi,
I need to write shell script for the scenario explained below -
datafile.txt
AcctNum,code,Region,,,,
12345451,AN ,abaab
12345452,AN ,xccxc
76677545,RP ,acxcc
43567878,RP ,afghh
32190900,AN ,afrfrf
87312345,AN ,aqaw
I have a text file (datafile.txt)... (1 Reply)
Hi ,
I have a simple text file with contents as below:
12345678900 971,76 4234560890
22345678900 5971,72 5234560990
32345678900 71,12 6234560190
the new csv-file should be like:
Column1;Column2;Column3;Column4;Column5
123456;78900;971,76;423456;0890... (9 Replies)
Hi,
I have a tab delimited text file with three different columns. I want to add an extra column to the text file. The extra column will be the second column and it will equal third column - 1. How do I go about doing that? Thanks!
Input:
chr1 788822 rs11240777
chr1 1008567 rs9442372... (2 Replies)
Hi
I have a requirement to write a script but not sure which is the best way to approach this
I have not worked in sed but I'm aware that its robust for file extraction requirements
I have a scripting task. I already developed the code in perl but the script is taking almost 2 mins for... (5 Replies)
Hi Gurus,
I have a question
I have a flat file like below with three fields (3 rd field is amt)
ad|B|500
cc||100
dd|C|600
ee||900
Need to write a code in such a way that when second field is empty then do sum of third field
So in this case it will be 100 +900
I tried but no luck... (1 Reply)
Hello,
Supposing I had a huge list as follows:
TAC manufacturer Device Type
1392600 LG D959 LG-D959TS FeaturePhone
1409700 LG V410 FeaturePhone
35150806 LG F350S FeaturePhone
35165206 Samsung GT-E1200 FeaturePhone
35194505 Nokia Asha 200 FeaturePhone
but I want to make it look like... (3 Replies)
Discussion started by: Cludgie
3 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)