Sponsored Content
Full Discussion: Query on Code
Top Forums UNIX for Beginners Questions & Answers Query on Code Post 303033477 by RavinderSingh13 on Saturday 6th of April 2019 04:24:28 AM
Old 04-06-2019
Hello nag_sathi,

This is called "parameter expansion" see following from documentation.

Quote:
${parameter%word}
${parameter%%word}
The word is expanded to produce a pattern and matched according to the rules described below (see Pattern Matching). If the pattern matches If the pattern matches a trailing portion of the expanded value of parameter, then the result of the expansion is the value of parameter with the shortest matching pattern (the ‘%' case) or the longest matching pattern (the ‘%%' case) deleted. If parameter is ‘@' or ‘*', the pattern removal operation is applied to each positional parameter in turn, and the expansion is the resultant list. If parameter is an array variable subscripted with ‘@' or ‘*', the pattern removal operation is applied to each member of the array in turn, and the expansion is the resultant list
Here is the link for understanding parameter expansion too.
Shell Parameter Expansion (Bash Reference Manual)

I hope this helps.

Thanks,
R. Singh
These 2 Users Gave Thanks to RavinderSingh13 For This Post:
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

query

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

query.....

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

Excel related query for the code..need help..

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

Need Help on query

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

add the output of a query to a variable to be used in another query

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

Query Oracle tables and return values to shell script that calls the query

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

want to query : YES or NO

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

html code in SQL query

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

JDBC code to pass the SQL query as parameter and execute?

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

Shell Script to execute Oracle query taking input from a file to form query

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
fnmatch(3C)						   Standard C Library Functions 					       fnmatch(3C)

NAME
fnmatch - match filename or path name SYNOPSIS
#include <fnmatch.h> int fnmatch(const char *pattern, const char *string, int flags); DESCRIPTION
The fnmatch() function matches patterns as described on the fnmatch(5) manual page. It checks the string argument to see if it matches the pattern argument. The flags argument modifies the interpretation of pattern and string. It is the bitwise inclusive OR of zero or more of the following flags defined in the header <fnmatch.h>. FNM_PATHNAME If set, a slash (/) character in string will be explicitly matched by a slash in pattern; it will not be matched by either the asterisk (*) or question-mark (?) special characters, nor by a bracket ([]) expression. If not set, the slash character is treated as an ordinary character. FNM_NOESCAPE If not set, a backslash character () in pattern followed by any other character will match that second character in string. In particular, "\" will match a backslash in string. If set, a backslash character will be treated as an ordinary character. FNM_PERIOD If set, a leading period in string will match a period in pattern; where the location of "leading" is indicated by the value of FNM_PATHNAME: o If FNM_PATHNAME is set, a period is "leading" if it is the first character in string or if it immediately fol- lows a slash. o If FNM_PATHNAME is not set, a period is "leading" only if it is the first character of string. If not set, no special restrictions are placed on matching a period. RETURN VALUES
If string matches the pattern specified by pattern, then fnmatch() returns 0. If there is no match, fnmatch() returns FNM_NOMATCH, which is defined in the header <fnmatch.h>. If an error occurs, fnmatch() returns another non-zero value. USAGE
The fnmatch() function has two major uses. It could be used by an application or utility that needs to read a directory and apply a pattern against each entry. The find(1) utility is an example of this. It can also be used by the pax(1) utility to process its pattern operands, or by applications that need to match strings in a similar manner. The name fnmatch() is intended to imply filename match, rather than pathname match. The default action of this function is to match file- names, rather than path names, since it gives no special significance to the slash character. With the FNM_PATHNAME flag, fnmatch() does match path names, but without tilde expansion, parameter expansion, or special treatment for period at the beginning of a filename. The fnmatch() function can be used safely in multithreaded applications, as long as setlocale(3C) is not being called to change the locale. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe with exceptions | +-----------------------------+-----------------------------+ SEE ALSO
find(1), pax(1), glob(3C), setlocale(3C), wordexp(3C), attributes(5), fnmatch(5), standards(5) SunOS 5.10 24 Jul 2002 fnmatch(3C)
All times are GMT -4. The time now is 09:22 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy