Shell script help


 
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# 15  
Old 05-04-2010
If it cant find a directory, it dosent do anything and moves to the next one, without giving any error.

If it cant find todays file, it says "Not Found..." message. But does not show file path.

I am trying to accomplish:

1. It should say "/path/to/dir" not found - when the directory isnt there
2. It should say "/dir/file.txt is not new" - when the file isnt from current date, showing the directory path
# 16  
Old 05-04-2010
Ok, perhaps a change in direction is worth considering... in your original post, you said you were searching for the files... your last post suggests that you know exactly where each file is and you just want to know if it is from the current date. Is this accurate?
# 17  
Old 05-05-2010
I apologize, let me explain.

Your correction on my script does almost what i wanted it to do. But since there are many soft links its searches (~30), when it does not find a current file it only says "File Not Found". This output does not tell the reader where to search for this outdated file.

All I want it to do is to have a some error detection mechanism to alert when:

1. when the directory isnt there (but since it searches only high level "/home/student/mylinks". im not sure how would it know if a soft link is missing?), the should be an error telling that the directory is missing

2. if the file isnt current date, i should know which soft link has the old file. Instead of just getting "File not found", it should say for example, "File not found: /home/student/mylinks/dir1"
# 18  
Old 05-05-2010
The first item requires a specific list of files, not simply a search. The search will find the files that exist and allow you to process them. If you want to know if a specific file cannot be access because it is missing or the link is broken, then you need to specifically list the file and test for its existence. If you know that there are X number of locations and those locations do not change, then the script can be written to check each of those locations specifically.

To address the second item, try editing the failure echo command in the processFile function to include the file name...

OLD:
Code:
echo "Not Found........."

NEW:
Code:
echo "Not Found: ${1}"


Last edited by dunkar70; 05-05-2010 at 09:25 AM..
# 19  
Old 05-05-2010
By adding

Code:
echo "Not Found: ${1}"

I was able to point to the directory having old file. It shows the dir path.

But the bigger problem seems to be issue no. 1

Mainly as when I removed the file all together OR removed the soft link, the check did not detect and passed it as "GOOD". (as you explained, it does what its supposed to do)

Any idea how to put directory and file availability check?

Thanks
# 20  
Old 05-05-2010
Wrench

Ok, so it sounds like you need three different types of responses:
  • File not found
  • File found, but not updated
  • File found and current
The script below takes a different approach. You will need to update the file name, log file location, and the array containing the list of directories. I'm rusty on arrays so it may not work as it is written.

Code:
#!/bin/bash
NOW=$(date +"%Y-%m-%d")

# Set the file names
FILE=fileName.txt
LOGFILE=${NOW}_FileCheck.log

# List the directories to search. DO NOT INCLUDE THE TRAILING SLASH
DIR=( "path/to/location1" "path/to/location2" )


#############################
# Define functions
#############################

function checkStat
{
    # make sure stat command is installed
    which stat > /dev/null
    if [ $? -eq 1 ]; then
        echo "stat command not found!"
        exit 2
    fi
}

function processFile
{
    if [ -f ${1} ]; then
        VAR="$(stat -c %y ${1})"
        VAR2="${VAR:0:10}"

        if [ $NOW == $VAR2 ]; then
            echo "Current File Found: ${1}" | tee -a ${LOGFILE}
        else
            echo "Old File Found: ${1}" | tee -a ${LOGFILE}
        fi
    else
        echo "File Not Found: ${1}" | tee -a ${LOGFILE}
    fi
}

#############################
# Main
#############################

# Verify the stat command exists
checkStat

# Create or clear the log file
echo "" > ${LOGFILE}

# Process the files
for f in ${DIR[@]}; do
    processFile ${f}/${FILE}
done

# 21  
Old 05-05-2010
thanks for explaining to me. i have a question:

What is the purpose of 'LOGFILE' ?

I will ultimately use this script as follows, do you think by having my 'erroremail=1' flag would cause any issues cause we have more than one "else" statements now?

Code:
#!/bin/bash
NOW=$(date +"%Y-%m-%d")

# Set the file names
FILE=fileName.txt
LOGFILE=${NOW}_FileCheck.log

# List the directories to search. DO NOT INCLUDE THE TRAILING SLASH
DIR=( "path/to/location1" "path/to/location2" )


#############################
# Define functions
#############################

function checkStat
{
    # make sure stat command is installed
    which stat > /dev/null
    if [ $? -eq 1 ]; then
        echo "stat command not found!"
        exit 2
    fi
}

function processFile
{
    if [ -f ${1} ]; then
        VAR="$(stat -c %y ${1})"
        VAR2="${VAR:0:10}"

        if [ $NOW == $VAR2 ]; then
            echo "Current File Found: ${1}" | tee -a ${LOGFILE} >>/tmp/myemail.txt
        else
erroremail=1
            echo "Old File Found: ${1}" | tee -a ${LOGFILE} >>/tmp/myemail.txt
        fi
    else
erroremail=1
        echo "File Not Found: ${1}" | tee -a ${LOGFILE} >>/tmp/myemail.txt
    fi
}

#############################
# Main
#############################

# Verify the stat command exists
checkStat

# Create or clear the log file
echo "" > ${LOGFILE}

# Process the files
for f in ${DIR[@]}; do
    processFile ${f}/${FILE}
done

#############
#Email Module
#############

if [ $erroremail -eq 1 ] ; then
       SUBJECT="ERROR: Current File Not Found"
         else
              SUBJECT="OK: Todays Files are good"
fi

# Email To ?
EMAIL="someone@somewhere.com"
# Email text/message
EMAILMESSAGE="/tmp/distemail.txt"
# send an email using /bin/mail
mail -s "$SUBJECT" "$EMAIL" < $EMAILMESSAGE


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