Hi guys, I hope you can help me with my problem.
I have a text file that contains lines like this:
78 ANGELO -809.05
79 ANGELO2 -5,000.06
I need to find all occurences of amounts that are negative and replace them with x's
78 ANGELO xxxxxxx
79... (4 Replies)
Okay, I have a script right now that is made to search through a file and replace certain strings with a new one. The format to execute is "/subst <replacethis> <withthis> <filename>" and it only updates the file IF changes are made (in order to preserve the time it was made/last modified). I have... (6 Replies)
I have an xml file with following tags
<NewTag>value123</xyz>
<NewTag>value321</abcd>
I have to replace the values in between the tags with some value ( VAL1/VAL2)
but the thing the ending tag can be any thing, for this i need a awk command
currently i am using this but it... (5 Replies)
Hi
I have a text file which contains the following.
AAA,BBB,CCC,DDD
AAA,BBB,CCC,DDD
AAA,BBB,CCC,DDD
How can I replace all CCC with 888, with other contents inside the file remain unchange? Please advice
Desired output:
AAA,BBB,888,DDD
AAA,BBB,888,DDD
AAA,BBB,888,DDD (1 Reply)
Hi I am new to shell scripting but i manage to do some simple things.
I am trying to replace a string in one file. I am using sed to replace but it is not permanently writing to the file, rather it is temporary. I want to know whether is there any another method to replace a string in a file... (7 Replies)
I have one string
string1=user/password:IP_ADDR:Directory
I need to replace string1 value like store into string2
string2=user password:IP_ADDR:Directory
i.e replace "/" character by '<space>' character
But i wouldn't use any file in the meantime.
Please help me......................... (6 Replies)
I need to search and replace a particular string in a file. Only the exact match of the string should be replaced.
eg: File contents : abc abcd abcdef
--> Replace only 'abc' with 'xyz', but it should not replace abcd with xyzd.
So the o/p should be: xyz abcd abcdef.
How can this be done? I... (5 Replies)
Hi All,
I have below file which has data in below format.
#$ | AB_100
| AB_300
()| AB_4
@*(% | AB-789
i want o/p as below format.
| AB_100
| AB_300
| AB_4
| AB-789
So here there is no standard format.
How we can achieve the same in unix ?
Regards, (3 Replies)
Dear Friends,
I want to replace following line with given line.
It should grep/search following string in a file (input.txt)
M/M SRNO: 000M/6200-0362498 COSMETIC PRO MALE FEMALE
Once found it should replace it to following string.
T_DLHNNO: 000M/6200-0362498 ... (7 Replies)
Hi,
Using the following command, I can only get rid of the last extension from my input file name:
parallel command '>' {.}.output ::: my.input.file
The output file is "my.input.output"
How can I get rid of the last two extensions of my input file name, so that end up with "my.output"?... (4 Replies)
Discussion started by: forU
4 Replies
LEARN ABOUT MOJAVE
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)