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Top Forums Shell Programming and Scripting substitute variable with in another variable Post 302645229 by snreddy_gopu on Wednesday 23rd of May 2012 06:31:27 AM
Old 05-23-2012
substitute variable with in another variable

hi ,

please help me in this context

pkg1_name="/dir1/dir2/dir3/pkg1.txt"
pkg2_name="/dir1/dir2/dir4/pkg2.txt"
.
.
.


input to the script is pkg1 or pkg2 or ...

i have used pkg variable to save input i.e.
pkg=$1

now i need the following

result=`awk something ${pkg}_name ` for each file

but the output is showing error as

pkg1_name : no such file or directory

how can i get result=`awk something ${pkg}_name /dir1/dir2/dir3/pkg1.txt`
 

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dircmp(1)							   User Commands							 dircmp(1)

NAME
dircmp - directory comparison SYNOPSIS
dircmp [-ds] [-w n] dir1 dir2 DESCRIPTION
The dircmp command examines dir1 and dir2 and generates various tabulated information about the contents of the directories. Listings of files that are unique to each directory are generated for all the options. If no option is entered, a list is output indicating whether the file names common to both directories have the same contents. OPTIONS
The following options are supported: -d Compares the contents of files with the same name in both directories and output a list telling what must be changed in the two files to bring them into agreement. The list format is described in diff(1). -s Suppresses messages about identical files. -w n Changes the width of the output line to n characters. The default width is 72. OPERANDS
The following operands are supported: dir1 A path name of a directory to be compared. dir2 USAGE
See largefile(5) for the description of the behavior of dircmp when encountering files greater than or equal to 2 Gbyte ( 2**31bytes). ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of dircmp: LC_COLLATE, LC_CTYPE, LC_MES- SAGES, and NLSPATH. EXIT STATUS
The following exit values are returned: 0 Successful completion. >0 An error occurred. (Differences in directory contents are not considered errors.) ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWesu | +-----------------------------+-----------------------------+ SEE ALSO
cmp(1), diff(1), attributes(5), environ(5), largefile(5) SunOS 5.10 1 Feb 1995 dircmp(1)
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