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Full Discussion: Getting the value of env variables
Top Forums Shell Programming and Scripting Getting the value of env variables Post 302305617 by nobody4 on Thursday 9th of April 2009 10:55:21 AM
Old 04-09-2009
Getting the value of env variables
You need to evaluate the "name" variable before you can use it that way,
essentially give the shell a chance to process it as though it was typed in.

eval cd $name

Depending on how much you are doing with name, it might be useful to do this first to avoid a lot of "eval"s.

eval name="$name"

As you are changing directory, be sure that you go back to a known place between "cd" commands
or it may not find the directory that you are looking for.

Code:
start=`pwd`
for name in `awk { print $1 } file1`
do
    eval name="$name"
    cd $start
    cd $name
done

 

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LEARN ABOUT OPENDARWIN

env

ENV(1)							    BSD General Commands Manual 						    ENV(1)

NAME

     env -- set and print environment

SYNOPSIS

     env [-i] [name=value ...] [utility [argument ...]]

DESCRIPTION

     env executes utility after modifying the environment as specified on the command line.  The option name=value specifies an environmental
     variable, name, with a value of value.  The option '-i' causes env to completely ignore the environment it inherits.

     If no utility is specified, env prints out the names and values of the variables in the environment, with one name=value pair per line.

DIAGNOSTICS

     If the utility is invoked, the exit status of env shall be the exit status of utility; otherwise, the env utility exits with one of the fol-
     lowing values:

     0	     The env utility completed successfully

     1-125   An error occurred in the env utility.

     126     The utility specified by utility was found, but could not be invoked.

     127     The utility specified by utility could not be found.

COMPATIBILITY

     The historic - option has been deprecated but is still supported in this implementation.

SEE ALSO

     execvp(3), environ(7)

STANDARDS

     The env utility conforms to IEEE Std 1003.2-1992 (``POSIX.2'').

BUGS

     env doesn't handle commands with equal (``='') signs in their names, for obvious reasons.

BSD
								  August 27, 1993							       BSD
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