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Script to attach latest files of directories in a mail.

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Top Forums Shell Programming and Scripting Script to attach latest files of directories in a mail.
# 8  
Old 01-23-2018
A good practice is to use && after cd command.
This will stop your script from executing further if a directory is not accessible by means of permissions, problems with hardware etc.

Take the following example, where 2 bytes of code (&&) handle a dozen of possible error scenarios.
Code:
root@machine:~# cat somescript.sh 
#!/bin/sh
loc=/my/files/dumpp # this location does not exist due to human error inputing additional 'p'
cd $loc
printf "%s\n" "my start dir is $PWD which is not expected but i will happily execute relative find.." 
FILE=`find . | tail -5` 
root@machine:~# ./somescript.sh 
./somescript.sh : 3: cd: can't cd to /my/files/dumpp
my start dir is /root which is not expected, but i will happily execute relative find..
root@machine:~# cat handle.sh 
#!/bin/sh
loc=/my/files/dumpp # this location does not exist due to human error inputing additional 'p'
cd $loc &&
printf "%s\n" "my start dir is $PWD which is not expected but i never reached this line" 
FILE=`find . | tail -5` 
root@machine:~# ./handle.sh 
./handle.sh: 3: cd: can't cd to /my/files/dumpp

Hope that helps
Regards
Peasant.
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LEARN ABOUT PLAN9

bundle

BUNDLE(1)						      General Commands Manual							 BUNDLE(1)

NAME

       bundle - collect files for distribution

SYNOPSIS

       bundle file ...

DESCRIPTION

       Bundle  writes  on  its	standard output a shell script for rc(1) or a Bourne shell which, when executed, will recreate the original files.
       Its main use is for distributing small numbers of text files by mail(1).

       Although less refined than standard archives from ar(1) or tar(1), a bundle file is self-documenting and complete;  little  preparation	is
       required on the receiving machine.

EXAMPLES

       bundle mkfile *.[ch] | mail kremvax!boris
	      Send  a  makefile  to Boris together with related and files.  Upon receiving the mail, Boris may save the file sans postmark, say in
	      gift/horse, then do

       cd gift; rc horse; mk

SOURCE

       /rc/bin/bundle

SEE ALSO

       ar(1), tar(1), mail(1)

BUGS

       Bundle will not create directories and is unsatisfactory for non-text files.
       Beware of gift horses.

																	 BUNDLE(1)