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Full Discussion: Change directory within a bash shell script
Top Forums Shell Programming and Scripting Change directory within a bash shell script Post 303028369 by bakunin on Saturday 5th of January 2019 07:06:07 PM
Old 01-05-2019
On top of what my esteemed colleagues already said: you should not need to do any cd in any script! Use absolute pathes whenever possible (that effectively means: always), this will always guarantee that the script works the same from whereever you call it.

Instead of i.e.
Code:
cd /some/where
for file in * ; do
     cp $file ../../some/where/else
done

Do it this way:

Code:
fSource="/some/where"
fTarget="/some/where/else"

for fFile in "$fSource"/* ; do
     fFile="${fFile##*/}"            # /some/where/filename -> filename
     cp "${fSource}/${fFile}" "${fTarget}/${fFile}"
done

I hope this helps.

bakunin
 

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LEARN ABOUT LINUX

service

service(8)						      System Manager's Manual							service(8)

NAME

       service - run a System V init script

SYNOPSIS

       service SCRIPT COMMAND [OPTIONS]

       service --status-all

       service --help | -h | --version

DESCRIPTION

       service runs a System V init script in as predictable environment as possible, removing most environment variables and with current working
       directory set to /.

       The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT.  The  supported  values  of  COMMAND  depend  on  the
       invoked	script,  service  passes  COMMAND and OPTIONS it to the init script unmodified.  All scripts should support at least the start and
       stop commands.  As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the  start
       command.

       service --status-all runs all init scripts, in alphabetical order, with the status command.

EXIT CODES

       service calls the init script and returns the status returned by it.

FILES

       /etc/init.d
	      The directory containing System V init scripts.

ENVIRONMENT

       LANG, TERM
	      The only environment variables passed to the init scripts.

SEE ALSO

       /etc/init.d/skeleton,
       update-rc.d(8),
       init(8),
       invoke-rc.d(8).

								     Jan 2006								service(8)
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