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Top Forums Shell Programming and Scripting Looping through filenames with spaces Post 302274538 by cfajohnson on Wednesday 7th of January 2009 10:59:21 PM
Old 01-07-2009
Quote:
Originally Posted by KenJackson
I made some progress with input from this forum, thank you, but I'm down to one stick point. Consider this simpler script:
Code:
#!/bin/sh
VAR=
echo 'A A
B B
C C' | while read f; do
    VAR="$VAR:$f"
    echo $f
done
echo "VAR=${VAR}"

The output is
Code:
A A
B B
C C
VAR=

The f variable echos properly in the loop, but I just can't seem to assign it's value to any other variable.
Why not?

Each element of a pipeline is executed in its own subshell and therefore cannot affect the parent shell.

Try echo "$VAR" inside the loop, and you'll see that it does get assigned to.
 

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GIT-VAR(1)                                                          Git Manual                                                          GIT-VAR(1)

NAME
git-var - Show a Git logical variable SYNOPSIS
git var ( -l | <variable> ) DESCRIPTION
Prints a Git logical variable. OPTIONS
-l Cause the logical variables to be listed. In addition, all the variables of the Git configuration file .git/config are listed as well. (However, the configuration variables listing functionality is deprecated in favor of git config -l.) EXAMPLE
$ git var GIT_AUTHOR_IDENT Eric W. Biederman <ebiederm@lnxi.com> 1121223278 -0600 VARIABLES
GIT_AUTHOR_IDENT The author of a piece of code. GIT_COMMITTER_IDENT The person who put a piece of code into Git. GIT_EDITOR Text editor for use by Git commands. The value is meant to be interpreted by the shell when it is used. Examples: ~/bin/vi, $SOME_ENVIRONMENT_VARIABLE, "C:Program FilesVimgvim.exe" --nofork. The order of preference is the $GIT_EDITOR environment variable, then core.editor configuration, then $VISUAL, then $EDITOR, and then the default chosen at compile time, which is usually vi. GIT_PAGER Text viewer for use by Git commands (e.g., less). The value is meant to be interpreted by the shell. The order of preference is the $GIT_PAGER environment variable, then core.pager configuration, then $PAGER, and then the default chosen at compile time (usually less). SEE ALSO
git-commit-tree(1) git-tag(1) git-config(1) GIT
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