@nextyoyoma:
will write 2000 lines into output2, not 1000 as requestedd per OP. Similarly the third awk command.
@OP:
If you have split(1) it's trivial:
On my system, the default is to split every 1000 lines, so actually all you'd need is
but check man split for your implementation.
If you don't have split, here is an awk solution:
It will create files
etc.
Hi there,
I need to split one huge file into separate files if the condition is fulfilled according to that the position between 97 and 98 matches with “IT” at the segment MAS. There is no delimiter file is fix-width with varous line length.
Could you please help me how I do split the file... (1 Reply)
All,
We receive a file with a large no of records (records can vary) and we have to split it into two files based on another file. e.g.
File1:
UHDR 2008112
"25187","00000022","00",21-APR-1991,"" ,"D",-000000519,+0000000000,"C", ,+000000000,+000000000,000000000,"2","" ,21-APR-1991... (7 Replies)
Hi ,
I have one file which has many headers.
Say suppose
HEDAER
..data DATA DATA
..data
..data
HEADER
..data
..data
DATA
.data
HEADER.
..data
..data
If there are 3 HEADERS in source file then I need to split the source file into 3 separate file.... (2 Replies)
Hi All,
I have a rather stange set of requirements that I'm hoping someone here could help me with. We receive a file that is actually a concatenation of 4 files (don't believe this would change, but ideally the solution would handle n files).
The super-file looks like:... (7 Replies)
Dear All,
I have two files but want to extract data from one based on another... can you please help me
file 1
David
Tom
Ellen
and file 2
David|0010|testnamez|resultsz
David|0004|testnamex|resultsx
Tom|0010|testnamez|resultsz
Tom|0004|testnamex|resultsx
Ellen|0010|testnamez|resultsz... (12 Replies)
Hi All,
I have more than half million lines of XML file , wanted to split in four files in a such a way that top 7 lines should be present in each file on top and bottom line of should be present in each file at bottom.
from the 8th line actual record starts and each record contains 15 lines... (14 Replies)
hdr=$(cut -c1 $path$file|head -1)#extract header”H”
trl=$(cut -c|path$file|tail -1)#extract trailer “T”
SplitFile=$(cut -c 50-250 $path 1$newfile |sed'$/ *$//' head -1')# to trim white space and extract table name
If; then # start loop if it is a header
While read I #read file
Do... (4 Replies)
Hi ,
I am having a scenario where I need to split the file based on two field values. The file is a fixed length file.
ex:
AA0998703000000000000190510095350019500010005101980301
K 0998703000000000000190510095351019500020005101480 ... (4 Replies)
Discussion started by: saj
4 Replies
LEARN ABOUT PHP
hwdb
HWDB(7) hwdb HWDB(7)NAME
hwdb - Hardware Database
DESCRIPTION
The hardware database is a key-value store for associating modalias-like keys to udev-property-like values. It is used primarily by udev to
add the relevant properties to matching devices, but it can also be queried directly.
HARDWARE DATABASE FILES
The hwdb files are read from the files located in the system hwdb directory /lib/udev/hwdb.d and the local administration directory
/etc/udev/hwdb.d. All hwdb files are collectively sorted and processed in lexical order, regardless of the directories in which they live.
However, files with identical filenames replace each other. Files in /etc have the highest priority and take precedence over files with the
same name in /lib. This can be used to override a system-supplied hwdb file with a local file if needed; a symlink in /etc with the same
name as a hwdb file in /lib, pointing to /dev/null, disables that hwdb file entirely. hwdb files must have the extension .hwdb; other
extensions are ignored.
Each hwdb file contains data records consisting of matches and associated key-value pairs. Every record in the hwdb starts with one or more
match strings, specifying a shell glob to compare the lookup string against. Multiple match lines are specified in consecutive lines. Every
match line is compared individually, and they are combined by OR. Every match line must start at the first character of the line.
The match lines are followed by one or more key-value pair lines, which are recognized by a leading space character. The key name and value
are separated by "=". An empty line signifies the end of a record. Lines beginning with "#" are ignored.
In case multiple records match a given lookup string, the key-value pairs from all records are combined. If a key is specified multiple
times, the value from the record with the highest priority is used (each key can have only a single value). The priority is higher when the
record is in a file that sorts later lexicographically, and in case of records in the same file, later records have higher priority.
The content of all hwdb files is read by systemd-hwdb(8) and compiled to a binary database located at /etc/udev/hwdb.bin, or alternatively
/lib/udev/hwdb.bin if you want ship the compiled database in an immutable image. During runtime, only the binary database is used.
EXAMPLES
Example 1. General syntax of hwdb files
# /lib/udev/hwdb.d/example.hwdb
# Comments can be placed before any records. This is a good spot
# to describe what that file is used for, what kind of properties
# it defines, and the ordering convention.
# A record with three matches and one property
mouse:*:name:*Trackball*:
mouse:*:name:*trackball*:
mouse:*:name:*TrackBall*:
ID_INPUT_TRACKBALL=1
# A record with a single match and five properties
mouse:usb:v046dp4041:name:Logitech MX Master:
MOUSE_DPI=1000@166
MOUSE_WHEEL_CLICK_ANGLE=15
MOUSE_WHEEL_CLICK_ANGLE_HORIZONTAL=26
MOUSE_WHEEL_CLICK_COUNT=24
MOUSE_WHEEL_CLICK_COUNT_HORIZONTAL=14
Example 2. Overriding of properties
# /lib/udev/hwdb.d/60-keyboard.hwdb
evdev:atkbd:dmi:bvn*:bvr*:bd*:svnAcer*:pn*
KEYBOARD_KEY_a1=help
KEYBOARD_KEY_a2=setup
KEYBOARD_KEY_a3=battery
evdev:atkbd:dmi:bvn*:bvr*:bd*:svnAcer*:pn123*
KEYBOARD_KEY_a2=wlan
# /etc/udev/hwdb.d/70-keyboard.hwdb
# disable wlan key on all at keyboards
evdev:atkbd:*
KEYBOARD_KEY_a2=reserved
If the hwdb consists of those two files, a keyboard with the lookup string "evdev:atkbd:dmi:bvnAcer:bdXXXXX:bd08/05/2010:svnAcer:pn123"
will match all three records, and end up with the following properties:
KEYBOARD_KEY_a1=help
KEYBOARD_KEY_a2=reserved
KEYBOARD_KEY_a3=battery
SEE ALSO systemd-hwdb(8)systemd 237HWDB(7)