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CAT file then to CPIO using Korn Shell

I am messing with a backup script that I have and ran into issue. In this case I want to extract the directories and files that I want to backup from a file. I have a file named: include_dirs which includes a short list of files and directories for testing.

include_dirs:

Code:

 

/home/testuser/

/home/testuser/file1

/home/testuser/file2

/home/testuser/file3

Code:

dirs=include_dirs # the files and directories I want to back up

date=$(date +%m%d%y)

cat $dirs | while read lines

        do

                echo $lines| cpio -oavc > /home/testuser/extract/full$date.cpio 2> /home/testuser/extract/full_status$date.log



        done

When I run it I get: ----> I truncated the other gargage

Code:

ksh -x ./test_backup full

+ dirs=include_dirs

+ [[ -d /home/testuser/extract ]]

+ [[ full == full ]]

+ read directories

+ cat include

+ cpio -oavc

+ echo /home/testuser/file1

+ 1> /home/testuser/extract/full101011.cpio 2> /home/testuser/extract/full_status101011.log

+ read directories

+ cpio -oavc

+ echo /home/testuser/file2

+ 1> /home/testuser/extract/full101011.cpio 2> /home/testuser/full_status101011.log

It keeps recreating the cpio file and then eventually ends. I think it has something to due with echoing the file and then piping it to cpio. Would this suffice:

Code:

dirs=include_dirs # the files and directories I want to back up

date=$(date +%m%d%y)

cat $dirs | while read lines

        do

              cat $lines| cpio -oavc < $lines > /home/testuser/extract/full$date.cpio 2> /home/testuser/extract/full_status$date.log



        done

'find $(cat include_dirs) -type f | cpio --whatever-args'?

Thanks

Is the whole line enclosed in single quotes ''

Code:

'find $(cat include_dirs) -type f | cpio --whatever-args'

Quote:

Originally Posted by metallica1973 (Post 4495712)

Is the whole line enclosed in single quotes ''

No just

Code:

find $(cat include_dirs) -type f | cpio --whatever-args

and make sure you replace "--whatever-args" with something useful.

thanks,

the interesting part is that everything works find from the cli and not in the script so if I do this the commands work:

Code:



dirs=include_test

cat $dirs | cpio -oavc > /media/caca/extract/test_data.cpio

But if I just create a while.ksh script and have this:

Code:

#!/bin/ksh

date=$(date +%m%d%y)

dirs=include_test



cat $dirs | while read directories 

          

        do

                cat $directories | cpio -oavc > /home/testuser/extract/full$date.cpio 

done

it just hangs. I tried your method and it does work.

Code:

#!/bin/ksh

date=$(date +%m%d%y)

dirs=include_test



cat $dirs | while read directories 

          

        do

        

find $(cat $dirs) -type f | cpio -oavc > /home/testuser/extract/full$date.cpio 2> /home/testuser/extract/full$date.log 



done

When I execute what you have the script keeps looping and never ends. I can just tail the full$date.log and see the loop. It just starts all over again. It may be my loop structure

regards

It looks like I had an id10t error. I needed the exit.

Code:

#!/bin/ksh

date=$(date +%m%d%y)

dirs=include_test



cat $dirs | while read directories 

          

        do



find $(cat $dirs) -type f | cpio -oavc > /home/testuser/extract/full$date.cpio 2> /home/testuser/extract/full$date.log



exit

done

Quote:

Originally Posted by metallica1973 (Post 4495779)

It looks like I had an id10t error. I needed the exit.

No, that's not it. Written out in full:

Code:

#!/bin/ksh

# - Adding paths ensures that things work even if items isn't in the PATH.

# - Using all-caps variable names makes them easier to spot.

# - I prefer YYYY/MM/DD-style dates as they're easier to sort:

CFGDATE=$(/bin/date +'%Y%m%d')

CFGFILE="/path/to/include_test"

CFGEXTRACTPATH="/home/testuser/extract"



# Loop over the contents of /path/to/include_test, and for each item do:

cat "${CFGFILE}" | while read DIRNAME; do

 # Check if the variable is empty:

 if [ -z "${DIRNAME}" ]; then exit 1; fi

 # Check if the directory exists:

 if [ ! -d "${DIRNAME}" ]; then exit 1; fi

 # Find files in item DIRNAME discarding errors

 # and exit the copio process on error

 find "${DIRNAME}" -type f 2>/dev/null | \

 cpio -oavc > "${CFGEXTRACTPATH}/full${CFGDATE}.cpio" \

 2> "${CFGEXTRACTPATH}/full${CFGDATE}.log" || \

 { echo "Unable to cpio-process \"${CFGEXTRACTPATH}/full${CFGDATE}.cpio\", exiting."; exit 1; }

# After all items are processed exit the loop

done

# Exit the script

exit 0

* I haven't checked this in Korn BTW as I'm more accustomed to Heirloom Bourne and Bourne Again shells so YMMMV(VM).

Many thanks

I will create a new post with my next questions on detecting whitespaces

Regards