Shell Programming and Scripting

Hello Ymir,

Could you please try following code and let us know if this helps.

Code:

output=`ls -ltr | awk '{print $NF}' 
for i in ${output[@]}
do
 echo $i | awk -F"_" -vYstd=$(date +"%Y%m%d" -d"-4 day")
                       '$3>Ystd        {if ($1 ~ "full") printf "10"
                           if ($1 ~ "level") printf "5"
                           sub (/^.* /,"")
                           printf "\t%s\n", $0
                     }'
done

Thanks,
R. Singh

First, never tell us: "i use your command and make this script but it wouldn't work"! Show us the exact output from running the script that explains to us exactly what didn't work. If you don't show us how it isn't working, it makes it a huge guessing game for all of us (especially those of us who are using a different operating system and shell than you're using).

Second, there is a HUGE difference between running a program and feeding its output to awk as RudiC suggested with:

Code:

ls -l | awk ...

and running a program, saving its output in a variable, executing a fixed string, and feeding the results of the command named by that string to awk as your code is doing:

Code:

output=$(ls -l $1) 
"output" | awk ...

Why are you storing the output from ls in a variable.

Third: You have an extraneous single quote before the -F option to awk.

And, fourth: I don't see how this script is going to work if you use ls -l instead of ls without the -l option. (With ls -l output, $1 in awk is never going to match Full nor level.)

Please try running your script more like RudiC suggested:

Code:

ls "$1" | awk -F"_" -v Ystd=$(date +"%Y%m%d" -d"-4 day") '
        $3>Ystd        {if ($1 ~ "full") printf "10"
                         if ($1 ~ "level") printf "5"
                         sub (/^.* /,"")
                         printf "\t%s\n", $0
                        }'

You assigned the ls result to the "output" variable. To get at its contents, the shell needs to expand it: $output, to keep the shell from swallowing redundant spaces etc, quote it: "$output". To pipe it into sth. else, echo it: echo "$output".
Why don't you pipe ls's results immediately, as I alluded in my post?

Thank you dear Singh.
but your command doesn't work.

dear Don . i use the ssh to get the directory info. so i had to run and put it in a variable.
i use your shell command and it work but not the way i want it.
result:

Code:

        arch_ORCL_20150130_7303_1.bck
        arch_ORCL_20150131_7307_1.bck
        arch_ORCL_20150201_7311_1.bck
5       level1_ORCL_20150131_7305_1.bck
5       level1_ORCL_20150201_7309_1.bck

i want just return a value. your shell script return a value for each directory name.
let me put it this way:
i want check the directory for backup status. valid backup lifetime is less than two days. now
if the script return the "10" i found out i have a full backup which is valid.
if the script return the "5" i found out i have a level backup which is valid.
in other wise i dont have a valid backup file.
thank you dear RudiC.
i use the ssh to get the directory info. so i had to run and put it in a variable.

I don't see the necessity to use a variable if you run an ssh command. From what you showed in post #1, there is an entire directory listing to be processed, and you did not specify the output format desired.

Please provide the entire picture of what you need to do so we can provide a fit soulition.

Ok. let me explain what exactly i want.
I'm using zenoss to monitor my servers. in the zenoss i cant handle the plain text. i just can use the numerical values. now i want create an alert to warn me if there was no back up files.
so i decided to wrote an script to do this.
now if you guys have better idea please share it with me.
i really appreciate any sort of help.
thank you.

Sorry, I can't imagine the picture from what you post. Wildly guessing: Do you need a script to be run on every server that checks all files and, if a full/level backup found within the last two days, sends a number (10/5) back? How do you intend to send the date parameter if you can handle numbers only? How do you want to store the script?