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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 DEBIAN

conflict

CONFLICT(8)							     [nmh-1.5]							       CONFLICT(8)

NAME

       conflict - search for alias/password conflicts

SYNOPSIS

       /usr/lib/mh/conflict [-search directory] [-mail name] [-version] [-help] [aliasfiles ...]

DESCRIPTION

       Conflict is a program that checks to see if the interface between nmh and the transport system is in good shape

       Conflict also checks for maildrops in /var/mail which do not belong to a valid user.  It assumes that no user name will start with `.', and
       thus ignores files in /var/mail which begin with `.'.  It also checks for entries in the group(5) file which do not belong to a valid user,
       and for users who do not have a valid group number.  In addition duplicate users and groups are noted.

       If  the	-mail  name  switch is used, then the results will be sent to the specified name.  Otherwise, the results are sent to the standard
       output.

       The -search directory switch can be used to search directories other than /var/mail and to report  anomalies  in  those	directories.   The
       -search directory switch can appear more than one time in an invocation to conflict.

       Conflict should be run under cron(8), or whenever system accounting takes place.

FILES

       /etc/nmh/mts.conf	  nmh mts configuration file
       /etc/passwd		  List of users
       /etc/group		  List of groups
       /usr/bin/mh/mhmail	  Program to send mail
       /var/mail/		  Directory of mail drop

PROFILE COMPONENTS

       None

SEE ALSO

       mh-alias(5)

DEFAULTS

       `aliasfiles' defaults to /etc/nmh/MailAliases

CONTEXT

       None

MH.6.8								   11 June 2012 						       CONFLICT(8)