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Full Discussion: home directory
Top Forums Shell Programming and Scripting home directory Post 302308005 by cfajohnson on Thursday 16th of April 2009 08:33:33 PM
Old 04-16-2009
Quote:
Originally Posted by quirkasaurus
My preferred method of dealing with things like this is to do in 2 or 3 steps,
not all at once.

Here's the first script:

Code:
#!/bin/ksh

#----------------------------------------------------------------------#
# head to home partition. #
#----------------------------------------------------------------------#
cd /home

/bin/ls |
while read dir ; do

#----------------------------------------------------------------------#
# Not a directory, next.... #
#----------------------------------------------------------------------#
  if [ ! -d $dir ]; then
    continue
  fi


Why are you using ls? And why a full path?

Code:
for dir in */

Quote:
Code:
  cd $dir

#----------------------------------------------------------------------#
# Untar the tar file.... #
#----------------------------------------------------------------------#
  cp /fullpath/tar_file.gz .


Why copy the tarball?
Quote:
Code:
  gunzip tar_file.gz


That only ungzips it; it doesn't untar the files.

Code:
tar xvzf /fullpath/tar_file.gz

Quote:
Code:
  chmod -R *


That command is missing the permissions.
Quote:
Code:
  cd /home

done | tee /tmp/log1

Once that thing is debugged and working correctly,
I use a code generator to create the next dangerous type commands:
( mv commands in this case.... )

Code:
#!/bin/ksh

#----------------------------------------------------------------------#
# head to home partition. #
#----------------------------------------------------------------------#
cd /home

/bin/ls |
while read dir ; do


As above: why ls?
Quote:
Code:
  cd /home/$dir/public_html/test1

#----------------------------------------------------------------------#
# Randomly rename 6 files. #
#----------------------------------------------------------------------#
  num=0
  /bin/ls *.txt |
  while read file_nm ; do


Yet again.

Code:
for file_nm in *.txt

Quote:
Code:
    (( check = $RANDOM % 2 ))


Why not use the standard syntax?

Code:
check=$(( $RANDOM % 2 ))

(Though $RANDOM is not standard)
Quote:
Code:
    if [ $check -eq 0 ]; then
      continue
    fi

    (( num = num + 1 ))

    echo /bin/mv $PWD/$file_nm $PWD/newword${num}.word

    if [ $num -ge 6 ]; then
      break
    fi
  done ### while doing random renaming....

  cd /home

done |
  tee /tmp/log2

Then, before executing, I examine the contents of /tmp/log2.
If the commands in there look right --- then I execute that script with:

Code:
/bin/ksh -xvf /tmp/log2 2>&1 | tee /tmp/log3

Using this method decreases the risk incurred at each step and
provides a log for each step also.

HTH
Last edited by cfajohnson; 04-16-2009 at 09:41 PM..
 

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