04-06-2019
Yes, that's a "Parameter Expansion / Remove matching suffix pattern".
man bash:
Quote:
${parameter%word}
${parameter%%word}
Remove matching suffix pattern. The word is expanded to produce a pattern just as in pathname expansion. If the pattern matches a trailing portion of the
expanded value of parameter, then the result of the expansion is the expanded value of parameter with the shortest matching pattern (the ``%'' case) or the long”
est matching pattern (the ``%%'' case) deleted.
These 2 Users Gave Thanks to RudiC For This Post:
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have converted data written on excel sheet in unix through shell & perl prg
now the problem is I want that if starting columns of the xls sheet is Blank than when data is converted into unix then it should appear with this '|' sign. but it appearing like this:
hfgg|tytt|
but I want like... (2 Replies)
Discussion started by: akash
2 Replies
2. Shell Programming and Scripting
hi friends i want to know details of `exec` exact use of this command .....
actually i went through the man page but i didn`t get the satisfactory ...conclusion....
thaks in advance.... (1 Reply)
Discussion started by: newson
1 Replies
3. Shell Programming and Scripting
find /A/B/C/{1,3,5,7} -name "*.txt" -o -name "*.csv" -o -name "*.TXT" -o -name "*.dat" |xargs ls -ltr |awk '{print $8 ,$9}' > result.xls
it will give the result that is $8 and &9 in the result file...
let say i need the result is a excel file....and i need the result to be print like $8 field... (10 Replies)
Discussion started by: sapan123
10 Replies
4. UNIX for Dummies Questions & Answers
I just started to learn unix -
need help to write a script to query a logfile and produce the results that
contains a specific word "alarm" for a period from X day to Y day.
I really have no idea how to begin - :(
please help...
____________________________________________________
#... (1 Reply)
Discussion started by: snipfer
1 Replies
5. Shell Programming and Scripting
I would like to use the result of a query in another query. How do I redirect/add the output to another variable?
$result = odbc_exec($connect, $query);
while ($row = odbc_fetch_array($result)) {
echo $row,"\n";
}
odbc_close($connect);
?>
This will output hostnames:
host1... (0 Replies)
Discussion started by: hazno
0 Replies
6. Shell Programming and Scripting
Hi,
I have a requirement as below which needs to be done viz UNIX shell script
(1) I have to connect to an Oracle database
(2) Exexute "SELECT field_status from table 1" query on one of the tables.
(3) Based on the result that I get from point (2), I have to update another table in the... (6 Replies)
Discussion started by: balaeswari
6 Replies
7. Shell Programming and Scripting
hi
i want to make script. where i want to query from the user yes or no
exp: do you want to proceed :
y for yes
n for NO.
how this is possible in unix (3 Replies)
Discussion started by: dodasajan
3 Replies
8. Shell Programming and Scripting
Hi expert,
I have a script which is connecting with sql internally, fetch same data, store it in a file and then from os I cat this file and sending it to mail (windows outlook).
This is working fine, I just need to know wether we can add some html codes with the sql query like we can add... (0 Replies)
Discussion started by: mcagaurav
0 Replies
9. Programming
Below i have the sample code. i need to pass the entire query from file or as parameter and read the results and write into a output file.
here the number of columns are unknown. some times it may be 2,3 or entire columns from the table.
read all the column results and write into a comma... (0 Replies)
Discussion started by: laknar
0 Replies
10. Shell Programming and Scripting
Hi,
I need to query Oracle database for 100 users. I have these 100 users in a file. I need a shell script which would read this User file (one user at a time) & query database.
For instance:
USER CITY
--------- ----------
A CITY_A
B CITY_B
C ... (2 Replies)
Discussion started by: DevendraG
2 Replies
CW(7) Miscellaneous Information Manual CW(7)
NAME
CW - the international Morse code
DESCRIPTION
CW is an abbreviation for "continuous wave", the commonly used technical term for Morse code communication. A basic knowledge or under-
standing of Morse code is a requirement for Radio Amateurs and Marine Radio Operators in many parts of the world.
MORSE CODE TIMINGS
In Morse code, a dot or dash is referred to as an element. The basic timing unit is the dot period. This is the time taken to send a dot,
not including any space before or after the dot. The lengths of all other elements are then derived from this basic unit, using the fol-
lowing rules:
The duration of a dash is three dots.
The time between each element (dot or dash) is one dot length.
The space between characters is three dot lengths.
The space between words is seven dot lengths.
The following formula calculates the dot period in microseconds from the Morse code speed in words per minute:
dot period = ( 1200000 / speed )
This formula arises from the use of the word PARIS as a 'standard' word for calibrating Morse code speed. PARIS is 50 units long when sent
in Morse code. Analysis of English plain-text indicates that the average word is 50 units, including spaces.
MORSE CODE CHARACTERS
The following list shows the IS0 8859-1 (Latin-1) characters that have commonly understood representations in Morse code:
ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"$()+-./:;=?_@ and space
In addition, following ISO 8859-1 and ISO 8859-2 accented characters are also part of the generally accepted international Morse code:
UACOEEANS (S with cedilla), (Z with caron/hacek),
Finally, libcw adds the following ASCII characters as extensions to single character procedural signals:
<>!&^~
MORSE CODE CHARACTER TABLES
The following table shows the Morse code equivalents for the ISO 8859-1, accented ISO 8859-1, and accented ISO 8859-2 characters above.
The ASCII portion of this table is taken from the ARRL Handbook, and the accented extensions from various other sources:
Ch Code Ch Code Ch Code Ch Code
-------------------------------------------------------
A .- B -... C -.-. D -..
E . F ..-. G --. H ....
I .. J .--- K -.- L .-..
M -- N -. O --- P .--.
Q --.- R .-. S ... T -
U ..- V ...- W .-- X -..-
Y -.-- Z --..
0 ----- 1 .---- 2 ..--- 3 ...--
4 ....- 5 ..... 6 -.... 7 --...
8 ---.. 9 ----.
" .-..-. ' .----. $ ...-..- ( -.--.
) -.--.- + .-.-. , --..-- - -....-
. .-.-.- / -..-. : ---... ; -.-.-.
= -...- ? ..--.. _ ..--.-
Ch Code Ch Code
-------------------------------------------------
U ..-- A .-.-
C -.-.. O ---.
E ..-.. A .-..-
A .--.- N --.--
S (S+cedilla) ---- (Z+caron/hacek) --..-
In addition to the above standard characters, the following characters are conventionally used for punctuation and procedural signals as
follows:
Ch Code Ch Code Ch Code Ch Code
-------------------------------------------------------
" .-..-. ' .----. $ ...-..- ( -.--.
) -.--.- + .-.-. , --..-- - -....-
. .-.-.- / -..-. : ---... ; -.-.-.
= -...- ? ..--.. _ ..--.- @ .--.-.
and the following are non-conventional extensions implemented by libcw:
Ch Code Ch Code Ch Code Ch Code
-----------------------------------------------------
< ...-.- > -...-.- ! ...-. & .-...
^ -.-.- ~ .-.-..
An alternative view of punctuation and procedural signals is as combination Morse characters:
Ch Prosig Ch Prosig Ch Prosig Ch Prosig
---------------------------------------------------------
" [AF] ' [WG] $ [SX] ( [KN]
) [KK] + [AR] , [MIM] - [DU]
. [AAA] / [DN] : [OS] ; [KR]
= [BT] ? [IMI] _ [IQ] @ [AC]
< [VA],[SK] > [BK] ! [SN] & [AS]
^ [KA] ~ [AL]
NOTES
Despite the fact that this manual page constantly and consistently refers to Morse code elements as dots and dashes, DO NOT think in these
terms when trying to learn Morse code. Always think of them as 'dit's and 'dah's.
SEE ALSO
Man pages for libcw(3,LOCAL), cw(1,LOCAL), cwgen(1,LOCAL), cwcp(1,LOCAL), and xcwcp(1,LOCAL).
CW Tutor Package CW(7)