08-12-2007
I think you want something like:
awk 'NR == 1 { line1=$0} END { print "line one is " , line1 , " last line is " $0 }' data.file
sed '1d;$d' data.file
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hai
in my shell script i want to replace the following commands
1) more
2) head
3) tail
i want to try all type of possible options avaliabul in the above commands
please help in implementing those commands (9 Replies)
Discussion started by: g_s_r_c
9 Replies
2. UNIX for Dummies Questions & Answers
I've a major file which includes other files and now I wanna 'cut' the file in several minor parts....like
....
find / -name "*.tmp" >filea
wc -l filea >fileb
sed -e '1s/ filea//' fileb >filec
AMOUNT=`cat filec`
if ; then
cat file a |head -100l (ell) |tail -100l >filec
cat file a |head... (6 Replies)
Discussion started by: svennie
6 Replies
3. Shell Programming and Scripting
Hi,
I have been given assignment of 30 scripts out of which I was able to solve many, I need help with few out of which one asks to imitate head and tail command of unix without using the head and tail commands. Problem is stated below:
Write an interactive shell script to imitate the head... (5 Replies)
Discussion started by: nutalk
5 Replies
4. Shell Programming and Scripting
Hi, I only have a very limited understanding and experience with writing code and I was hoping I could get some help.
I have a dataset of two columns (txt format, numbers in each row separated by a tab)
Eg.
1 5
2 5
3 6
4 7
5 6
6 6
7 ... (5 Replies)
Discussion started by: Emred_Skye
5 Replies
5. Shell Programming and Scripting
Hi,
As part of our project, we need to load historical data for a year before our system is live. We have the data feed files that we need to load. However, I need to make sure that the file structure (number of fields separated by a comma) on the field is same for all the files of the same... (1 Reply)
Discussion started by: raj.jha
1 Replies
6. UNIX for Dummies Questions & Answers
hay i need to display middle line:
1
2
3
4
5
how can i display 3-4? (6 Replies)
Discussion started by: margan_ron
6 Replies
7. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
view the 7th line of the program xxx.sh
2. Relevant commands, code, scripts, algorithms:
head command tail... (10 Replies)
Discussion started by: hbell221
10 Replies
8. UNIX for Dummies Questions & Answers
Hi All,
I am new to unix.
In this forum some days back, I have read something like below:
1) Do not use perl if awk can do your work.
2) Do not use awk if sed can do your work.
.
.
.
I do not re-collect the whole thing. I think it is good to know the precedence of using these... (2 Replies)
Discussion started by: Prathmesh
2 Replies
9. Homework & Coursework Questions
First month learning about the Linux terminal and it has been a challenge yet fun so far. We're learning by using a gameshell. I'm trying to display a certain line ( only allowed 1 command ) from a file only using the head or tail. I'm pretty about this answer:
head -23 history.txt | tail -1... (1 Reply)
Discussion started by: forzatekk
1 Replies
LEARN ABOUT CENTOS
packet.record
PACKET.RECORD(1) packet.record 1.0.1 PACKET.RECORD(1)
NAME
packet.record - Record module
DESCRIPTION
Provides the object for a record and the string representation of the record in a tcpdump trace file.
Record object attributes:
Record(
index = Frame number
length_inc = Number of bytes included in trace
length_orig = 1
msecs = 905320,
seconds = 1349747491,
secs = 4.165262937545776,
)
CLASSES
class Record(baseobj.BaseObj)
Record object
Usage:
from packet.record import Record
x = Record()
Methods defined here:
---------------------
__str__(self)
String representation of object
The representation depends on the verbose level set by debug_repr(). If set to 0 the generic object representation is returned. If
set to 1 the representation of the object is condensed to display the frame number and the timestamp:
'57 0.530957 '
If set to 2 the representation of the object also includes the number of bytes on the wire, number of bytes captured and a little
bit more
verbose:
SEE ALSO
baseobj(1)
BUGS
No known bugs.
AUTHOR
Jorge Mora (mora@netapp.com)
NFStest 1.0.2 10 April 2013 PACKET.RECORD(1)