Need to parse file "x" lines at a time ... awk array?
I have files that store multiple data points for the same device "vertically" and include multiple devices. It repeats a consistant pattern of lines where for each line:
Column 1 is a common number for the entire file and all devices in that file Column 2 is a unique device number Column 3 is a unique identifier of the data point included on that line Column 4 is the unique data point
So above I have three devices (y1, y2 and y3) that all have three data points (a, b and c). One of the data points is a unique name, so I can discard $1,$2,$3 and I only want to retain $4. What I want to do is flatten the three data points into a single line per device:
Code:
name1,2.5,4
name2,3,5.5
name3,1,2
I have found a way to take a given set of lines, awk print $4 and insert them on the same line
But I need a loop to continue processing the next "x" lines.
Above is a simple view of what I'm trying to do. My files have 53 data points for every device. And the number of devices is "random". Therefore my loop that "ingests" 53 lines at a time and then spits them out on a single line needs to continue until the file is complete (do ; done < $1 ?). For example one file is 312,912 lines (5,904 devices x 53 data points) another is 318,000 lines (6,000 devices x 53 data points). Using sed I can do what I need to do on the first 53 lines of the file, but now I just need to insert it into a loop.
Hi Friends,
Can any of you explain me about the below line of code?
mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'`
Im not able to understand, what exactly it is doing :confused:
Any help would be useful for me.
Lokesha (4 Replies)
I am attempting to write a awk script that reads in a file after awk array elements are assigned and using those elements while reading in the new file. Does this make sense?
/pattern/ {tst=$3}
(( getline < "file" ) > 0 ) {
x=x " "tst
}
When I print tst in the END statement it... (9 Replies)
Hi,
I have line in input file as below:
3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL
My expected output for line in the file must be :
"1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL"
Can someone... (7 Replies)
logs:
"/home/abc/public_html/index.php"
"/home/abc/public_html/index.php"
"/home/xyz/public_html/index.php"
"/home/xyz/public_html/index.php"
"/home/xyz/public_html/index.php"
how to use "cut" or "awk" or "sed" to get the following result:
abc
abc
xyz
xyz
xyz (8 Replies)
Hi experts ,
I am trying to get the below output:
file :
0/6/4/1 0x0019503C2E26 5 UP lan5 snap5 1 ETHER Yes 224
0/6/4/0 0x0019503C2E25 6 UP lan6 snap6 2 ETHER Yes 224
0/2/1/0 0x0019503E6900 0 UP lan0 snap0 3 ETHER Yes 224... (8 Replies)
Hi,
I am on a Solaris8 machine
If someone can help me with adjusting this awk 1 liner (turning it into a real awkscript) to get by this "event not found error"
...or
Present Perl solution code that works for Perl5.8 in the csh shell ...that would be great.
******************
... (3 Replies)
I have a bunch of random character lines like ABCEDFG. I want to find all lines with "A" and then change any "E" to "X" in the same line. ALL lines with "A" will have an "X" somewhere in it. I have tried sed awk and vi editor. I get close, not quite there. I know someone has already solved this... (10 Replies)
How to use "mailx" command to do e-mail reading the input file containing email address, where column 1 has name and column 2 containing “To” e-mail address
and column 3 contains “cc” e-mail address to include with same email.
Sample input file, email.txt
Below is an sample code where... (2 Replies)
Hello.
System : opensuse leap 42.3
I have a bash script that build a text file.
I would like the last command doing :
print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt
where :
print_cmd ::= some printing... (1 Reply)
Discussion started by: jcdole
1 Replies
LEARN ABOUT CENTOS
unsquashfs
UNSQUASHFS(1) uncompress squashfs filesystems UNSQUASHFS(1)NAME
mksquashfs - tool to uncompress squashfs filesystems
SYNOPSIS
unsquashfs [OPTIONS] FILESYSTEM [directories or files to extract]
DESCRIPTION
Squashfs is a highly compressed read-only filesystem for Linux. It uses zlib compression to compress both files, inodes and directories.
Inodes in the system are very small and all blocks are packed to minimize data overhead. Block sizes greater than 4K are supported up to a
maximum of 64K.
Squashfs is intended for general read-only filesystem use, for archival use (i.e. in cases where a .tar.gz file may be used), and in con-
strained block device/memory systems (e.g. embedded systems) where low overhead is needed.
OPTIONS -v, -version
print version, licence and copyright information.
-d PATHNAME, -dest PATHNAME
unsquash to PATHNAME, default "squashfs-root".
-n, -no-progress
don't display the progress bar.
-no, -no-xattrs
don't extract xattrs in file system.
-x, -xattrs
extract xattrs in file system (default).
-p NUMBER, -processors NUMBER
use NUMBER processors. By default will use number of processors available.
-i, -info
print files as they are unsquashed.
-li, -linfo
print files as they are unsquashed with file attributes (like ls -l output).
-l, -ls
list filesystem, but don't unsquash.
-ll, -lls
list filesystem with file attributes (like ls -l output), but don't unsquash.
-f, -force
if file already exists then overwrite.
-s, -stat
display filesystem superblock information.
-e EXTRACT_FILE, -ef EXTRACT_FILE
list of directories or files to extract. One per line.
-da SIZE, -data-queue SIZE
Set data queue to SIZE Mbytes. Default 256 Mbytes.
-fr SIZE, -frag-queue SIZE
Set fragment queue to SIZE Mbytes. Default 256 Mbytes.
-r, -regex
treat extract names as POSIX regular expressions rather than use the default shell wildcard expansion (globbing).
Decompressors available
gzip
lzo
xz
SEE ALSO mksquashfs(1)HOMEPAGE
More information about unsquashfs and the squashfs filesystem can be found at <http://squashfs.sourceforge.net/>.
AUTHOR
squashfs was written by Phillip Lougher <plougher@users.sourceforge.net>.
This manual page was written by Daniel Baumann <daniel.baumann@progress-technologies.net>.
4.2 2012-06-30 UNSQUASHFS(1)