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Shell Programming and Scripting
variable declaration
Post 302520848 by metal005 on Monday 9th of May 2011 11:03:12 AM
05-09-2011
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what does this mean when a variable is declared as
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I declared a variable x that gets the count(*) from a table. The table name is also defined as a variable.
What's wrong with this statment :
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then
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It throws an error saying count not found.
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Dear Unix experts
I want to define a variable which contains dynmic and static part, daynamic part is the first field.
Sample of data
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ssss 2323 234234 4242
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ssss 24234 3434 42342
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Anyone please say what is the difference between $var and ${var} in perl
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Prabhu
---------- Post updated at 09:34 AM ---------- Previous update was at 05:59 AM ----------
Any one please clarify (1 Reply)
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Dear Unix experts
Moved from "Shell Programming and Scripting "
I want to define a variable which contains dynmic and static part, daynamic part is the first field.
Sample of data
dddd aaaa sssss 12345
ssss 2323 234234 4242
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Hi Guys,
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Hello,
Why is this not working in a script?
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run a command
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LEARN ABOUT OSF1
sh
sh(1) General Commands Manual sh(1) NAME
sh - Shell, the standard command language interpreter DESCRIPTION
[Tru64 UNIX] Tru64 UNIX provides two command interpreters with the name sh. The XCU5.0 and POSIX.2 compliant command interpreter sh is available in the file /usr/bin/posix/sh and is described in the sh(1p) reference page. The Bourne shell, historically known as sh, is available in the file /usr/bin/sh and is described in the sh(1b) reference page. [Tru64 UNIX] Your initial, or login, shell is determined by your entry in the file /etc/passwd. This file can be changed only by your sys- tem administrator. You must use whatever procedures are in place at your location to have this entry changed. [Tru64 UNIX] If available on your system, you may use the passwd -s or the chsh commands to change your login shell. Note This option is not available if your site manages passwords through the Network Information Service (NIS) facility. Check with your system administrator. [Tru64 UNIX] Subsequent shells spawned from the initial shell depend on the value in the environment variable BIN_SH. If this variable is set to xpg4, the POSIX shell is started. If this variable is set to svr4, an SVR4 compliant version of the shell is started. If this vari- able is unset, the Bourne shell is started. If this variable is set to any other value, an error is reported and the results are unpre- dictable. See the EXAMPLES section for information on setting this variable. NOTES
[Tru64 UNIX] With Tru64 UNIX Version 4.0 the Korn shell, /usr/bin/ksh is the same as the POSIX shell /usr/bin/posix/sh. RESTRICTIONS
[Tru64 UNIX] The file /etc/shells must include entries for both the POSIX shell /usr/bin/posix/sh and the Bourne shell, /usr/bin/sh. If this file is incorrect, see your system administrator. EXAMPLES
Using the Bourne, Korn, or POSIX shell, to set the variable BIN_SH to use the POSIX/ XCU5.0compliant shell, enter: BIN_SH=xpg4 export BIN_SH Using the Bourne, Korn, or POSIX shell, to set the variable BIN_SH to use the SVR4 compliant shell, enter: BIN_SH=svr4 export BIN_SH Using the Bourne, Korn, or POSIX shell, to unset the variable BIN_SH, enter: unset BIN_SH Using the C/ shell, to set the variable BIN_SH to use the POSIX/XCU5.0 compliant shell, enter: setenv BIN_SH xpg4 Using the C/ shell, to set the variable BIN_SH to use the SVR4 compliant shell, enter: setenv BIN_SH svr4 Using the C/ shell, to unset the variable BIN_SH, enter: unsetenv BIN_SH FILES
User profile. Contains user information, including the login shell name. Contains the names of available and permitted shells. SEE ALSO
Commands: csh(1), ksh(1), Bourne shell sh(1b), POSIX shell sh(1p), passwd(1) Files: passwd(4), shells(4) Standards: standards(5) sh(1)