02-20-2012
Replace line and field using SED and/or AWK or some other suggestion
QUESTION 1:
How do you replace a specific line (i.e. line 4) with a new user defined line (i.e. the contents of SAMS’s name, history, math and English grades have been set already). I have been attempting to use SED (FYI: I don’t have GNU SED) or AWK, but haven’t had any luck. FYI: I am using SOLARIS 10 as an OS. See example below. FYI: KEEP IN MIND FOR ALL EXAMPLES I WAS UNABLE TO PROPERLY ALIGN NAME, HISTORY, MATH AND ENGLISH WITH THERE CORRESPONDING VALUES USING THIS THREAD WORD PROCESSOR .
Below is the starting file.
NAME: HISTORY: MATH: ENGLISH:
ROB A B A
DAN A C B
JOHN C B A
For example if John has left the class and SAM has joined and his grades are all A's.
Resulting file (BOLD TEXT IS WHAT NEEDS TO CHANGE):
NAME: HISTORY: MATH: ENGLISH:
ROB A B A
DAN A C B
SAM A A A
Question 2:
Does anyone know how to replace a specific field (i.e. line 2, field 2)? I would like to do the replacement this generically (line 2, field 2). So, for example I don’t want to use grep on ROB. Again, I do not have GNU SED. See example below.
Below is the starting file.
NAME: HISTORY: MATH: ENGLISH:
ROB A A A
DAN A A A
JOHN A A A
Resulting file (BOLD TEXT IS WHAT NEEDS TO CHANGE):
NAME: HISTORY: MATH: ENGLISH:
ROB A B A
DAN A A A
JOHN A A A
Last edited by methyl; 02-20-2012 at 11:49 PM..
Reason: Clearly homework and should have been posted in the homework forum
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I need to edit the password file to change the password field to *LK* for a specified account (abctest) like:
abctest:*LK*:135:20::/home/abctest:/sbin/sh
Can anyone help me do this using ed or sed?
Thanks a lot! (6 Replies)
Discussion started by: munch
6 Replies
2. Shell Programming and Scripting
Hello
I have a document and in this document I have several occurrence of "VAR == xxxxxxx" and xxxxx can be anything. I don't know what it is. I want to replace the 'xxxxx's with something I know.
What I know however, is the line numbers of the VAR =='s in the file.
How can I replace... (1 Reply)
Discussion started by: alirezan
1 Replies
3. UNIX for Dummies Questions & Answers
Hi all,
I'm writing a script in bash where i'm reading line by line into variable,
and the i want to replace the second filed in the line with another number,
for example if the line looks like this:
10 20 30 40 50
it should look like this:
10 90 30 40 50
and put the new result inside... (1 Reply)
Discussion started by: morfix
1 Replies
4. Shell Programming and Scripting
I'm trying to update a text file via sed/awk, after a lot of searching I still can't find a code snippet that I can get to work.
Brief overview:
I have user input a line to a variable, I then find a specific value in this line 10th field in this case. After asking for new input and doing some... (14 Replies)
Discussion started by: crownedzero
14 Replies
5. Shell Programming and Scripting
I have an input like following.
*DEFINE_CURVE_TITLE
Force for tool binder
$# lcid sidr sfa sfo offa offo dattyp
3 0 1 .000000 125.00000 0.000 0.000 0
$# a1 ... (5 Replies)
Discussion started by: hamnsan
5 Replies
6. Shell Programming and Scripting
hi experts ,
I have an input like following.
R sfst 1000.0000
$ new time step for mass scaled calculation
R dt2ms -4.000E-7
$ friction value for blank
R mue ... (10 Replies)
Discussion started by: hamnsan
10 Replies
7. Shell Programming and Scripting
i have something like this,
cat filename.txt
hui this si s"dfgdfg" omeone ipaddress="10.19.123.104" wel hope this works
i want to replace only 10.19.123.104 with different ip say 10.19.123.103
i tried this
sed -i "s/'ipaddress'/'ipaddress=10.19.123.103'/g" filename.txt
... (1 Reply)
Discussion started by: vivek d r
1 Replies
8. Shell Programming and Scripting
Hi experts,
In my text file I have the following alot of lines like below.
input.k is as follows.
2684717 -194.7050476 64.2345581 150.6500092 0 0
2684718 -213.1575623 62.7032242 150.6500092 0 0
*INCLUDE
$# filename... (3 Replies)
Discussion started by: hamnsan
3 Replies
9. Shell Programming and Scripting
Hi Everyone,
I have a file as below:
IM2345638,sherfvf,usha,30
IM384940374,deiufbd,usha,30
IM323763822,cdejdkdnbds,theju,15
0,dhejdncbfd,us,20
IM398202038,dhekjdkdld,tj,30
0,foifsjd,u2,40
The output i need is as below
IM2345638,sherfvf,usha,30... (4 Replies)
Discussion started by: usha rao
4 Replies
10. Shell Programming and Scripting
All, I appreciate any help you can offer here as this is well beyond my grasp of awk/sed...
I have an input file similar to:
&LOG
&LOG Part: "@DB/TC10000021855/--F"
&LOG
&LOG
&LOG Part: "@DB/TC10000021852/--F"
&LOG Cloning_Action: RETAIN
&LOG Part: "@DB/TCCP000010713/--A"
&LOG
&LOG... (5 Replies)
Discussion started by: KarmaPoliceT2
5 Replies
LEARN ABOUT DEBIAN
nwdiag
NWDIAG(1) General Commands Manual NWDIAG(1)
NAME
nwdiag - generate network-diagram image file from spec-text file.
SYNOPSIS
nwdiag [options] files
DESCRIPTION
This manual page documents briefly the nwdiag commands.
nwdiag is generate sequence-diagram image file from spec-text file.
OPTIONS
These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is
included below. For a complete description, see the Info files.
-h, --help
show this help message and exit.
--version
show program's version number and exit.
-a, --antialias
Pass diagram image to anti-alias filter.
-c FILE, --config=FILE
read configurations from FILE.
-o FILE
write diagram to FILE.
-f FONT, --font=FONT
use FONT to draw diagram.
-T TYPE
Output diagram as TYPE format.
SEE ALSO
The programs are documented fully by
http://blockdiag.com/en/nwdiag/
AUTHOR
nwdiag was written by Takeshi Komiya <i.tkomiya@gmail.com>
This manual page was written by Kouhei Maeda <mkouhei@palmtb.net>, for the Debian project (and may be used by others).
June 11, 2011 NWDIAG(1)