Hello!
Is it anyone who might know how to extract the n last lines from a file, typically the 1000 last? Until know I have used sed -n np filename, but it takes each line separately, and is hence very time consuming.
Thank you in advance! (3 Replies)
Match column 3 in file1 to column 1 in file 2 and replace with column 2 from file2
file 1 sample
SNDK 80004C101 AT
XLNX 983919101 BB
NETL 64118B100 BS
AMD 007903107 CC
KLAC 482480100 DC
TER 880770102 KATS
ATHR 04743P108 KATS... (7 Replies)
Can anyone please help with this? I have 2 files as given below.
If 2nd column of file1 has pattern foo1@a, find the matching 1st column in file2 & replace 2nd column of file1 with file2's value.
file1
abc_1 foo1@a ....
abc_1 soo2@a ...
def_2 soo2@a ....
def_2 foo1@a ........ (7 Replies)
Hi Bigshots,
I have a pattern file with two columns. I have another data file. If column 1 in the pattern file appears as the 4th column in the data file, I need to replace it (4th column of data file) with column 2 of the pattern file. If the pattern is found in any other column, it should not... (6 Replies)
Hi,
I want to replace the value in more than one column.
For one column ,following command is working -
sed 's/./$value_to_replace/$column number' file_name
e.g. suppose this is input 1111000000
command - sed 's/./M/5'
output= 1111M000000
For two column also command is like -
cat... (22 Replies)
hi i have sample data
a,b,c,d,e,g h http://mysite.xyx
z,b,d,f,e,s t http://123124#
a,b,c,i,m,nothing
d,i,j,e,w,nothing
output expected is
a,b,c,d,e,http://mysite.xyx
z,b,d,f,e,http://123124#
a,b,c,i,m,nothing
d,i,j,e,w,nothing
i can get only links using grep -o 'http.*'
i... (8 Replies)
Hi Experts,
Please bear with me, i need help
I am learning AWk and stuck up in one issue.
First point : I want to sum up column value for column 7, 9, 11,13 and column15 if rows in column 5 are duplicates.No action to be taken for rows where value in column 5 is unique.
Second point : For... (12 Replies)
I have a csv which has lot of columns . I was looking for an awk script which would extract a column twice. for the first occurance the header and data needs to be intact but for the second occurance i want to replace the header name since it a duplicate and extract year value which is in ddmmyy... (10 Replies)
file1:
Name,Threshold,Curr Samples,Curr Error%,Curr ART
GETHome,100,21601,0.00%,47
GETregistry,100,21592,0.00%,13
GEThomeLayout,100,30466,0.00%,17
file2:
Name,Threshold,Curr Samples,Curr Error%,Curr ART
GETHome,100,21601,0.00%,33
GETregistry,100,21592,0.00%,22... (6 Replies)
Discussion started by: Raghuram717
6 Replies
LEARN ABOUT DEBIAN
avifix
avifix(1) General Commands Manual avifix(1)NAME
avifix - fix header of AVI-file
SYNOPSIS
avifix [ -i name [ -F string ] [ -f val1,val2 ] [ -N 0x NN ] [ -b bitrate ] [ -e rate[,bits[,channels]] ] [ -a num ] [ -v ] ]
COPYRIGHT
avifix is Copyright (C) by Thomas Oestreich.
DESCRIPTION
avifix fixes the header of an AVI-file with the supplied parameters.
OPTIONS -i name
Specify the name of the AVI-file.
-F string
Specify the video codec as FourCC.
Possible values are RGB, RIFF and TIFF. ???
-f val1,val2
Use this option to change the frame rate and scale information in the header of the AVI-file. Both values must not be < 0.
-N 0xnn
Use this option to change the audio format identifier in the header of the AVI-file. Here are some possible values:
0x1 PCM uncompressed audio
0x50 MPEG layer-2 aka MP2
0x55 MPEG layer-3 aka MP3
0x2000 AC3 audio
-b bitrate
Use this option to change the encoder bitrate in the header of the AVI-file. bitrate has to be given in units of kbps.
-e rate[,bits[,channels]]
Use this option to change the audio stream parameters of in the header of the AVI-file.
-a num Use this option to change the audio stream parameters of audio track number num in the header of the AVI-file.
-v Print version information and exit.
EXAMPLES
The command
avifix -i my_file.avi -f 30,1
changes the header of the file my_file.avi and sets the frame rate to 30 fps.
AUTHORS
avifix was written by Thomas Oestreich
<ostreich@theorie.physik.uni-goettingen.de> with contributions from many others. See AUTHORS for details.
SEE ALSO avimerge(1), avisplit(1), tccat(1), tcdecode(1), tcdemux(1), tcextract(1), tcprobe(1), tcscan(1), transcode(1)avifix(1) 16th January 2002 avifix(1)