asked on

Need assistance modifying a simple bash script

Hi team,

Just need some assistance modifying a script I adopted based on my requirements from an earlier post:

https://www.experts-exchange.com/questions/27290774/How-to-run-a-bash-perl-script-that-gets-triggered-when-a-file-has-been-received-in-a-directory.html

The code that I have so far is this:

#!/bin/bash

UPLOAD_DIR=/home/usera/*.csv

for FILE in `find $UPLOAD_DIR -maxdepth 1 -type f -mmin -10`  # find the file created in past 10 minutes
do
  echo $FILE
  lsof  $FILE   # check if the file still lock by any process
  LOCK=$?
  if [ "$LOCK" -ne "0" ]   # if the file is free
  then
      cp $FILE  /var/lib/mysql/test/$FILE    #copy the file to another folder
  fi
done

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My problem is that the $FILE variable contains the whole path name of the file...for example filename Import2SQL.csv would be stored in the $FILE variable as /home/usera/Import2SQL.csv.

Therefore, when it comes to the part where I have to copy the file to another directory:

This line:

      cp $FILE  /var/lib/mysql/test/$FILE

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is evaluating as this:

      cp /home/usera/Import2SQL.csv   /var/lib/mysql/test//home/usera/Import2SQL.csv

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How do I modify the script to strip off the directory part of the filename so that I can copy the file correctly from /home/usera/Import2SQL.csv to the directory /var/lib/mysql/test/Import2SQL.csv?

Thanks very much.

ozo

${FILE##*/}

ASKER CERTIFIED SOLUTION

ozo

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SOLUTION

pilson66

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rleyba828

ASKER

Hi Team, Thanks for the help.

The suggestion from ozo is very elegant in its simplicity and actually worked for me.

The solution of iplson66 I believe would have worked also.

Thanks very much.

*PS OZO, could you pls. explain what ${FILE##*/} acutally did?

ozo

man bash
Parameter Expansion
${parameter#word}
${parameter##word}
The word is expanded to produce a pattern just as in pathname
expansion. If the pattern matches the beginning of the value of
parameter, then the result of the expansion is the expanded
value of parameter with the shortest matching pattern (the ``#''
case) or the longest matching pattern (the ``##'' case) deleted.
If parameter is @ or *, the pattern removal operation is applied
to each positional parameter in turn, and the expansion is the
resultant list. If parameter is an array variable subscripted
with @ or *, the pattern removal operation is applied to each
member of the array in turn, and the expansion is the resultant
list.