This might work but consider this 7789 (item number) will not repeat again in entire file but store number (7345) will definitely occur again in file for other item number. In your solution we are assuming that store record (17345***) will be in 5 lines immediately after matching record of (XYZ*7789*). This may not be the case because the store record I am looking for could be at any line not only within
. It could be after 10 lines or 20 lines or 50 lines. There are no fixed number of store records after line XYZ.
Hello guys
I want to retrieve two data from a file, like this:
bash-2.03$ cat numtest
123456
123457
bash-2.03$ more ./test_num
#!/bin/bash
num1=
num2=
cnt=1
while read x
do
num${cnt}=$x
cnt=$(($cnt+1))
done <$1
echo $num1 "\n" $num2
But when i executed this script, error... (2 Replies)
I am curious if the following can be done in a file in unix. Let's say I have a flat file with the following data
AAA,12,2,,,,
BBB,3,1,,,,
CCC,,,,,
DDD,2,,,,,
SQQ,,,,,
ASJ,,3,5
I only want to capture the data with values into a new file. If the data contains the pattern ,,,,, as in... (2 Replies)
hi all,
In an mp3 file , data is arranged in sequence of header and data ,how to retrieve data between two headers. Is the data between two headers fixed? because as per theory it says 1152 samples will be there , but dont knw how many bits one sample correspond to?
it would help if any c... (2 Replies)
Hi All,
I have 2 files (file1 & file2).
File1 and File2 have m and n columns respectively
I have to compare value in column1 of file1 with file2 and find line(s) from file2 matching column1 value.
The value can be in any column in the matching lines of file2.
The output should be... (10 Replies)
How to write a shell script to retrieve datas from database after that this database are redirect to a excell sheet and then i got a mail that gives details about the database with the column name and data..
I m using oracle 9i...
Thanks,
Anup Das (2 Replies)
Hello Experts,
I have come back to this forum after a while now, since require a better way to get my result.. My query is as below..
I have 3 files -- 1 Input file, 2 Data files .. Based on the input file, data has to be retreived matching from two files which has one common key..
For EX:... (4 Replies)
Hi all,
I have one file with IDs
Q8NDM7
P0C1S8
Q8TF30
Q9BRP8
O00258
Q6AWC2
Q9ULE0
Q702N8
A4UGR9
Q13426
Q6P2D8
Q9ULM3
A8MXQ7
I want to compare ID file with another file which has complete information about these IDs and also about other IDs which are not in the above ID file. As... (10 Replies)
Hello experts, I want to join a file with files whosE names are mentioned in one of the columns of the same file.
File 1
t1,a,b,file number 1
t1,a,c,file number 1
t2,c,d,file number 2
t2,c,e,file number 2
t2,c,f,file number 2
t2,c,g,file number 2
t3,e,f,file number 3
file number 1... (3 Replies)
Not sure if this is the correct forum for this question. I have two files. file1.zip, file2
Input:
file1.zip
col1, col2 , col3
a , b , 0:0:0:0:0:c436:9346:d40b
x, y, 0:0:0:0:0:880:39f9:c9a7
m, n , 0:0:0:0:0:80c7:9161:fe00
file2.txt
col1
c4:36:93:46:d4:0b... (1 Reply)
Discussion started by: anil.v
1 Replies
LEARN ABOUT ULTRIX
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)