Sponsored Content
Full Discussion: Head and Tail in One Line
Top Forums Shell Programming and Scripting Head and Tail in One Line Post 302131587 by Perderabo on Sunday 12th of August 2007 04:42:47 PM
Old 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

Implementing MORE,HEAD & TAIL

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

head & tail

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

Imitate head and tail command script

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

Averaging in increments using awk & head/tail

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

head / tail combination returns multiple rows

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

head\tail how to display middle lines

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

Head Tail Problem

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

What should be precedence of using awk, sed, head and tail in UNIX?

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

How to display certain line of file only using head or tail in 1 command?

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
cam(1)							      General Commands Manual							    cam(1)

NAME
cam - CPU'S AUDIO MIXER for Linux SYNOPSIS
cam [-v x,y] [--volume x,y] [-b x,y] [--bass x,y] [-t x,y] [--treble x,y] [-s x,y] [--synth x,y] [-p x,y] [--pcm x,y] [-S x,y] [--speaker x,y] [-l x,y] [--line x,y] [-m x,y] [--mic x,y] [-c x,y] [--cd x,y] [-M x,y] [--mixer x,y] [-a x,y] [--altpcm x,y] [-r x,y] [--reclev x,y] [-i x,y] [--igain x,y] [-o x,y] [--ogain x,y] [-l1 x,y] [--line1 x,y] [-l2 x,y] [--line2 x,y] [-l3 x,y] [--line3 x,y] [-3d 1|0] [--3dse 1|0] [-agc 1|0] [--agc 1|0] [-h] [-?] [--help] [-get] [-save] [-getfile filename] [-savefile filename] xcam DESCRIPTION
This is an audio mixer for Linux. You have the choice to use it with an interface or at the command line. OPTIONS
When using the interface you can use the following keys : LEFT ARROW decrease the volume of the current device. RIGHT ARROW increase the volume of the current device. UP ARROW go to previous device. DOWN ARROW go to next device. L locks or unlocks : unlocked : you can control the left and right channel separately. lock : left and right channel are controlled together. R turn on/off recording mode : red lamp : recording turned on green lamp : recording turned off 3 turn on/off 3D Stereo Enhancement (3DSE) device : when turned on green indicator 3D will be lit at the left side of main volume handle. A turn on/off microphone Automatic Gain Control : when turned on green indicator AGC will be lit at the left side of microphone volume handle. S save the settings of ALL devices in a file ($HOME/.camrc) G loads the saved settings and restores them. H shows the help screen. Q/ESC exits the program and returns to shell. NOTE: you can use upper or lower case. When using the command line options the interface is not shown. The following options are available : -v, --volume x,y Set 'volume' to x (left) and y (right) -b, --bass x,y Set 'bass' to x (left) and y (right) -t, --trebble x,y Set 'treble' to x (left) and y (right) -s, --synth x,y Set 'synth' to x (left) and y (right) -p, --pcm x,y Set 'pcm' to x (left) and y (right) -S, --speaker x,y Set 'speaker' to x (left) and y (right) -l, --line x,y Set 'line in' to x (left) and y (right) -m, --mic x,y Set 'microphone' to x (left) and y (right) -c, --cd x,y Set 'CD in' to x (left) and y (right) -I, --imix x,y Set 'mixer' to x (left) and y (right) -a, --altpcm x,y Set 'altpcm' to x (left) and y (right) -r, --reclev x,y Set 'record level' to x (left) and y (right) -i, --igain x,y Set 'input gain' to x (left) and y (right) -o, --ogain x,y Set 'output gain' to x (left) and y (right) -l1, --line1 x,y Set 'line 1' to x (left) and y (right) -l2, --line2 x,y Set 'line 2' to x (left) and y (right) -l3, --line3 x,y Set 'line 3' to x (left) and y (right) -3d, --3dse 1|0 Set 3D Stereo Enhancement to 1 (on) or 0 (off) -agc, --agc 1|0 Set Automatic Gain Control for microphone to 1 (on) or 0 (off) -get restore the saved values from $HOME/.camrc -save save the values to $HOME/.camrc -getfile filename restore the saved values from file 'filename' -savefile filename save the values to file 'filename' -h, -?, --help displays help NOTE: x and y are in range from 1 to 100. Higher or lower numbers are ignored. BUGS
None known as yet. If you find one, please let me know. AUTHOR
Jan 'TWP' VANDENBERGHE <jvdbergh@uia.ua.ac.be> cam(1)
All times are GMT -4. The time now is 03:52 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy