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Old 11-11-2017, 06:37 PM   #1
braveranger
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Bash Script For Reading User Input then Compressing That Input to Tar file


I have this so far:
#!/bin/bash

echo "Do you wish to encode or decode?"
select yn in "Encode" "Decode"; do
case $yn in
Encode ) echo "Name the file/text to be encoded:"
read name

echo "Drag files or type text to be compressed and ecoded now"
read raw

tar -czf $name.tar.gz $raw
in the terminal, i drag the files into the terminal at the "Drag files..." dialog

the problem i'm having is that when this runs, it compresses with the file(s) buried in the path. How to I change it to only compress the files and not the path? The strip option doesn't work.

Thanks
 
Old 11-11-2017, 06:40 PM   #2
braveranger
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encryption

i already the encryption section set up.
 
Old 11-11-2017, 08:06 PM   #3
AwesomeMachine
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'Read raw' is not going to work. The -r switch to the read builtin means 'raw', which disables backslash escapes and line continuation in the command line. If you want to use 'read', see this: http://wiki.bash-hackers.org/commands/builtin/read
 
Old 11-11-2017, 10:23 PM   #4
braveranger
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Quote:
Originally Posted by AwesomeMachine View Post
'Read raw' is not going to work. The -r switch to the read builtin means 'raw', which disables backslash escapes and line continuation in the command line. If you want to use 'read', see this: http://wiki.bash-hackers.org/commands/builtin/read
i changed "raw" to "files" and tried several variations of read and still having the same issue. when opening archive, i have multiple directories down to the file, like /home/user/test/test.txt. i want it to just be the file, with no directories.
 
Old 11-12-2017, 12:12 AM   #5
michaelk
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Including the absolute path would be the function of the desktop. If you remove the path then your script would fail if the files were not located in the same directory as your script.

Striping the path in tar is not so easy. One convoluted method would be to strip the path from the file in a loop, use the tar -C option and append the file to your archive then compress. Untested psuedo code would be something like.
Code:
For x in $files
do
  y=path of $x
  z=file name of $x
  tar -Af $name.tar -C $y $z
done
gzip $name.tar
There maybe a simpler method...
 
Old 11-12-2017, 07:28 AM   #6
braveranger
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Thanks, ill give that a try.


Quote:
Originally Posted by michaelk View Post
Including the absolute path would be the function of the desktop. If you remove the path then your script would fail if the files were not located in the same directory as your script.

Striping the path in tar is not so easy. One convoluted method would be to strip the path from the file in a loop, use the tar -C option and append the file to your archive then compress. Untested psuedo code would be something like.
Code:
For x in $files
do
  y=path of $x
  z=file name of $x
  tar -Af $name.tar -C $y $z
done
gzip $name.tar
There maybe a simpler method...

Last edited by braveranger; 11-12-2017 at 07:30 AM.
 
Old 11-12-2017, 07:52 AM   #7
michaelk
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Here is one quick method to strip path and filename but it will fail if they contain spaces. It also strips single quotes.

Code:
  temp="${x%\'}"
  temp="${temp#\'}"
  echo "${temp%/*}" # path to file
  basename $temp    # file name
 
Old 11-12-2017, 11:32 AM   #8
ondoho
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couldn't the script cd to the folder in question, then tar the file?
you'd have to separate the input into path and filename.

also for troubleshooting i recommend prepending th elast command with 'echo' to see what would have been tar'd.
 
Old 11-12-2017, 06:06 PM   #9
AwesomeMachine
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cd doesn't work in a script.
 
Old 11-13-2017, 12:48 AM   #10
ondoho
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^ what?
that would mean a significant number of my scripts wouldn't work.
no really, it does work on my setup: GNU bash, version 4.4.12
 
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Old 11-13-2017, 09:44 PM   #11
AwesomeMachine
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Cd works only in the script shell. Or, maybe I'm just imagining that.
 
Old 11-14-2017, 11:34 AM   #12
scasey
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Don't all scripts create an instance of a shell?
 
Old 11-15-2017, 08:48 AM   #13
rhubarbdog
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try
Code:
file_name=`basename $file_and_path`
file_path=`dirname $file_and_path`

Last edited by rhubarbdog; 11-15-2017 at 08:50 AM. Reason: tags don't seem to be working
 
Old 11-15-2017, 09:36 AM   #14
michaelk
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Much easier then my suggestion. Although a better method would be to use
Code:
file_name=$(basename "$files")
file_path=$(dirname "files")
Yes cd works in a script. As stated a script is ran with its own instance of a shell which means that when it terminates you will still be in the same directory as where you ran the script.
 
  


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