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Top Forums Shell Programming and Scripting String concatenation not working in a loop Post 302389817 by Scrutinizer on Tuesday 26th of January 2010 03:10:57 AM
Old 01-26-2010
The difference lies in the use of a pipe if you are using bash. This would work in ksh
Code:
cat "$FILE" | while read LINE ; do
    N=$((N+1))
    STE="$STE""dog"
  done

In bash (contrary to ksh) the last command in the pipe does not run in the current process so the variable STE loses its value once it finishes.

S.
 

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times(1)							   User Commands							  times(1)

NAME
times - shell built-in function to report time usages of the current shell SYNOPSIS
sh times ksh times DESCRIPTION
sh Print the accumulated user and system times for processes run from the shell. ksh Print the accumulated user and system times for the shell and for processes run from the shell. On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways: 1. Variable assignment lists preceding the command remain in effect when the command completes. 2. I/O redirections are processed after variable assignments. 3. Errors cause a script that contains them to abort. 4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari- able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not performed. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
ksh(1), sh(1), time(1), attributes(5) SunOS 5.10 15 Apr 1994 times(1)
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