Hi,
I want to make sed write a part of fileA (first 7 lines) to file1 and the rest of fileA to file2 in a single call and single line in sed. If I do the following:
Code:
sed '1,7w file1; 8,$w file2' fileA
I get only one file named file1 plus all the characters following file1. If I try to use curly braces in any form, either on the same line or multiline (with labels), I get either an error message about opening "{" not matched or two files with the desired result but with the syntax as their filename. Even if I use sed with -e option and preceed each write command with -e, I get the opening-curly-brace-not-matched complain, like here:
Code:
sed -e '1,7{w file1}' -e '8,${w file2}' fileA
How to concatenate multiple write sed commands with only one call to sed and on one line?
hey gents,
I'm working on something that will use snmpwalk to query the devices on my network and retreive the device name, device IP, device model and device serial. I'm using Nmap for the enumeration and sed to clean up the results for use by snmpwalk. Once i get all the data organized I'm... (8 Replies)
Hi,
I've to do a simple job many times whenever it has been asked, just i've to log in to all of fourtien HP servers and i've to execute
ps -fu user > temp
cat temp|sendmail "xyz@z.com"
commands to send the statics of all of 14 servers over the mail to particular user id..
Though logging... (4 Replies)
Hi,
I would like to write a script with include more than 6 unix commands.
my script like below:
echo " script started"
ls -ld
bdf | grep "rama"
tail -10 log.txt
...
..
...
now, i want to run above unix commands one by one.
example:
first the ls -ld command will be... (3 Replies)
Can someone tell me how I can do this?
e.g:
Say file1.txt contains:
today is monday
the 22 of
NOVEMBER
2010
and file2.txt contains:
the
11th
month
of
How do i replace the word NOVEMBER with (5 Replies)
Would appear to me to be a farily simple question but having search all the threads I can't find the answer .. I just want sed to output the single line in a file that contains two string anywhere on the line..
e.g. currently using this command
sed -n -e'/str1/p' -e '/str2/p' < file
and... (3 Replies)
Can somebody help me in solving this..
Input data is like
0 A
1 B
2 C
3 D
0 A1
1 B1
2 C1
3 D1
0 A2
1 B2
2 C2
3 D2
Output should be like
A B C D
A1 B1 C1 D1
A2 B2 C2 D2 (7 Replies)
Hi,
I have a requirement with,
No~Dt~Notes
1~2011/08/1~"aaa
bbb
ccc
ddd
eee
fff
ggg
hhh"
Single column alone got splitted into multiple lines.
I require the output as
No~Dt~Notes
1~2011/08/1~"aaa<>bbb<>ccc<>ddd<>eee<>fff<>ggg<>hhh"
mean to say those new lines to be... (1 Reply)
Hi There,
I have a cronjob that executes a small script (few lines) that I am certain can be achieved in a single line.
The functional objective is actually really simple;
cmd var1
The '1' in 'var1' is actually derived from date (day of month) but the snag is when working with 1-9 I... (3 Replies)
Hi,
I am new to shell scripting and have a question. I would like to redirect the output of multple commands to single file, From what I read from the bash manpage and from some searching it seems it cannot be done within the shell except setting up a loop. Is it?
I am running all clearcase... (1 Reply)
here is what i want to achieve.. i have a file with below contents
cat fileName
blah blah blah
.
.DROP this
REJECT that
.
--sport 7800 -j REJECT --reject-with icmp-port-unreachable
--dport 7800 -j REJECT --reject-with icmp-port-unreachable
.
.
.
more blah blah blah
--dport 3306... (14 Replies)
Discussion started by: vivek d r
14 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)