Hello,
I need to insert a line (like a header) as the first line of a very huge file (about 3 ml rows). I am able to do it with sed, but redirecting the output and creating a new file takes quite some time. I was wondering if there was a more efficient way of doing it?
Any help would be... (3 Replies)
when directing some text into a file can you choose where it goes like the top of the file (which is text aswell) or the middle??
if so how - especially would like to know how to do so in vi (text editor)
If i were to enter an argument ($1) into a another argument ($2)
would it would be... (6 Replies)
hi,
My code is
#!/bin/sh
echo "\n\nPlease enter the month of the year(YYYYMM) : \c"
read date_rep
INPUT_L9_FILE=L9_Recharge_Description_EOM_$date_rep.csv
#This part is used to summarise Grand_Total, Balance_Total of file L9_Recharge_Description_EOM_${1}.csv.
awk -F"," '{if(NR!=1)... (5 Replies)
Hi,
I need to insert a new line containing the string "QUERY" above every 5 lines.
The below piece of code inserts a new line after every 5th line
awk '{print $0} !(NR%5) {print "QUERY"}'
sed 'n;n;n;n;G;' --> I do not know how to give "QUERY" string here
But I need to insert it before... (4 Replies)
I'm trying to take mrt output and put it at the top of a file along with the date and time. I was able to do it at the bottom of the file with the following
printf "********** $(date) **********\n\n" >> $OUTPUT_PATH/$HOSTNAME
mtr -r -w -c 10 $HOSTADDRESS >> $OUTPUT_PATH/$HOSTNAME
printf... (2 Replies)
I have a test file that I want to read and insert only certain lines into the
the table based on a filter.
1. Rread the log file 12 Hours back Getdate() -12 Hours
2. Extract the following information on for lines that say "DUMP is
complete"
A. Date
B. Database Name
C.... (2 Replies)
Hi All,
I am using UNix Sun OS sun4u sparc SUNW,SPARC-Enterprise
My intention is to insert a line of text after 13th line of every file inside a particular directory.
While trying to do it for a single file , i am using sed
sed '3 i this is the 4th line' filename
sed: command garbled: 3... (5 Replies)
Discussion started by: gotamp
5 Replies
LEARN ABOUT OSX
cam
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)