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Top Forums UNIX for Beginners Questions & Answers Need UNIX script to check checksum and dummy file creation. Post 303031001 by RudiC on Wednesday 20th of February 2019 10:29:26 AM
Old 02-20-2019
I'm having a hard time to reconcile your specification in post #1 with what you show in post #3 - no cp command, no empty .pdy file creation, no cksum method determination, and the fields echoed don't match the ones given in spec nor within post #3

How would you get along with this as a starting point:
Code:
SRC="/data/files_to_transfer"
TGT="/data/final_files"


(
 cd "$SRC" 

for FN in *.txt
   do    read CKS REST <<< $(cksum $FN)
        > "$TGT/${FN%.*}.pdy"
        echo "$FN", $(date +%Y/%m/%d), $(wc -l < $FN), $CKS, "checksum method used" > "$TGT/${FN%.*}.ldy"
        cp "$FN" "$TGT/$FN"
  done
)

This is executed in a subshell so the cd command won't change your parent shell's CWD. And, yes, you're reading correctly - the redirection without a command will just create an output file but won't put anything in.

Last edited by RudiC; 02-25-2019 at 08:29 AM.. Reason: Found the opening parenthesis an cd $SRC missing
 

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makeself(1)						      General Commands Manual						       makeself(1)

NAME
makeself - An utility to generate self-extractable archives. SYNTAX
makeself [options] archive_dir file_name label [startup_script] [args] DESCRIPTION
This program is a free (GPL) utility designed to create self-extractable archives from a directory. OPTIONS
The following options are supported. -v, --version Prints out the makeself version number and exits. -h, --help Print out help information. --gzip Compress using gzip (default if detected). --bzip2 Compress using bzip2. --compress Compress using the UNIX 'compress' command. --nocomp Do not compress the data. --notemp The archive will create archive_dir in the current directory and uncompress in ./archive_dir. --copy Upon extraction, the archive will first copy itself to a temporary directory. --append Append more files to an existing makeself archive. The label and startup scripts will then be ignored. --current Files will be extracted to the current directory. Implies --notemp. --header file Specify location of the header script. --follow Follow the symlinks in the archive. --nox11 Disable automatic spawn of an xterm if running in X11. --nowait Do not wait for user input after executing embedded program from an xterm. --nomd5 Do not create a MD5 checksum for the archive. --nocrc Do not create a CRC32 checksum for the archive. --lsm file LSM file describing the package. AUTHORS
Makeself has been written by Stephane Peter <megastep@megastep.org>. This man page was originally written by Bartosz Fenski <fenio@o2.pl> for the Debian GNU/Linux distribution (but it may be used by others). 2.1.4 makeself(1)
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