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Full Discussion: Issue with shell script: not detecting file properly
Top Forums UNIX for Dummies Questions & Answers Issue with shell script: not detecting file properly Post 302357084 by figaro on Monday 28th of September 2009 04:36:27 PM
Old 09-28-2009
Issue with shell script: not detecting file properly
The following script is meant to check the presence of a file - called filename0.94.tar.gz - and uncompress it:
Code:
#!/bin/sh

# check presence of file
VERSION=0.94
if [ ! -f filename$VERSION.tar.gz ]; then 
  # file not present: abort
  echo "Files cannot be found."
  #exit 1 (commented out this line, so we can see how the rest of the program behaves)
fi
# uncompress file
echo "filename: uncompressing latest version..."
tar zxf filename$VERSION.tar.gz

exit 0

The output is however:
Code:
Files cannot be found.
filename: uncompressing latest version...
tar: Error opening archive: Failed to open 'filename0.94.tar.gz': No such file or directory

This script is run in the same location where filename0.94.tar.gz is. Why does the script not detect the file and uncompress it? Manual uncompression works as intended.
 

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LEARN ABOUT MOJAVE

shape_tar

SHAPE_TAR(1)						      General Commands Manual						      SHAPE_TAR(1)

NAME

       shape_tar - shapeTools RMS bundle up subsystem in a tar or shar archive

SYNOPSIS

	shape tar[VERSIONS=<version_selection_rule>] [ARCHIVE=<filename>]

       shape shar[VERSIONS=<version_selection_rule>] [ARCHIVE=<filename>]

DESCRIPTION

       Shape tar and shape shar create a tar or a shar archive containing all source components of the current node in the system tree. All source
       components listed in the COMPONENTS macro in the Makefile and the release identification file (VERSIONFILE) are	written  to  the  archive.
       Components of subsystems are not included in the archive file.

       The  VERSIONS  macro  may  be  set  to  specify a version selection rule to be active during archive file creation. Default is most_recent,
       selecting the most recent version of each component. See shape_stdrul(7) or the $(SHAPELIBPATH)/stdrules for other possible  settings.  You
       may also use self defined version selection rules as VERSIONS.

       ARCHIVE	is  the base name of the file where the output shall be written to. Default is $(SUBSYSTEMNAME). The output file gets the filename
       extension .tar (resp. .shar).  When ARCHIVE=- is given, data will be written to standard output.

SEE ALSO

       shape_RMS(1), shape_stdrul(7)

FILES

       $(SUBSYSTEMNAME).tar $(SUBSYSTEMNAME).shar

21.8.119															      SHAPE_TAR(1)
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