Shell Programming and Scripting

I'd like to create a report that is sent to me via email. It's basically just an ls -l of a directory. However, I'd like to add a column to the end of each file listing that is a numeral - telling me at a glance how old the file is.

For example, instead of this:

$ ls -l
total 9830796
-rw-r--r-- 1 voicem voicem 2011396608 Oct 21 03:06 file1.tar
-rw-r--r-- 1 voicem voicem 2010897920 Oct 28 02:32 file2.tar
-rw-r--r-- 1 voicem voicem 2007906816 Nov 4 02:29 file3.tar


I'd like to see this:
$ ls -l
total 9830796
-rw-r--r-- 1 voicem voicem 2011396608 Oct 21 03:06 file1.tar 28
-rw-r--r-- 1 voicem voicem 2010897920 Oct 28 02:32 file2.tar 21
-rw-r--r-- 1 voicem voicem 2007906816 Nov 4 02:29 file3.tar 14

Basically, the new column is an easy way for me to eyeball how old each of those three files are (as opposed to busting out the calendar and calculating how old they are).

if you have GNU date you can get the timestamp of a file and then of "now like this

Code:

TIM1=$(date -r $FILENAME %s)
TIM2=$(date %s)
let DT=TIM2-TIM1 # age of file in seconds
let AGE=DT/86400 #(seconds in a day)

In a uniline way

Code:

let AGE=($(date %s)-$(date -r $FILENAME %s))/86400

Add this where you want in the ouput, that all in a loop like

Code:

for FILENAME in *
do
...
done

This may be something I can use. However, I'm not sure how to tie in the uniline code with the for loop. Is this the syntax?

Code:

for FILENAME in /tmp
do
let AGE=($(date %s)-$(date -r $FILENAME %s))/86400
done

in the expression "for FILENAME in *" the "*" will be expanded in all the names of files in the current directory. You can write "for FILE in *.txt" or anything else.

The syntax:

Code:

$ cat test
#!/bin/ksh
for FILENAME in /tmp
do
let AGE=($(date %s)-$(date -r $FILENAME %s))/86400
done

The results of running the script:

$ ./test
./test: syntax error at line 4: `(' unexpected

Apologize :

Code:

#!/bin/ksh
for FILENAME in /home/voicem/ivr/arivra
do
let AGE=(`date %s`-`date -r $FILENAME %s`)/86400
done

The syntax:

Code:

$ cat test
#!/bin/ksh
for FILENAME in /home/voicem/ivr/arivra
do
let AGE=(`date %s`-`date -r $FILENAME %s`)/86400
done

Results of running script:

$ ./test
./test: syntax error at line 4: `(' unexpected