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Full Discussion: Bash script to STOP installation 'if' a file exists...
Operating Systems Linux Debian Bash script to STOP installation 'if' a file exists... Post 302625981 by gary_w on Wednesday 18th of April 2012 03:52:13 PM
Old 04-18-2012
Here's a simple example but understand testing for size also tests for file existence. use "-f" to just test if a file exists.
Code:
#!/bin/bash

if [ -s testfilename ]; then
  echo "Exists and has size"
else
  echo "Does not exist or has no size"
fi

exit 0

Read up on the manual page for test (the '[' character is a shortcut for the test command):
Code:
man test

Last edited by gary_w; 04-18-2012 at 04:55 PM.. Reason: edit to work in bash
 

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LEARN ABOUT DEBIAN

go-test

GO-TEST(1)						      General Commands Manual							GO-TEST(1)

NAME

       go - tool for managing Go source code

SYNOPSIS

       go test [-c] [-i] [ build flags ] [ packages ] [ flags for test binary ]

DESCRIPTION

       "Go test" automates testing the packages named by the import paths.  It prints a summary of the test results in the format:

	     ok   archive/tar	0.011s
	     FAIL archive/zip	0.022s
	     ok   compress/gzip 0.033s
	     ...

       followed by detailed output for each failed package.

       "Go  test"  recompiles each package along with any files with names matching the file pattern "*_test.go".  These additional files can con-
       tain test functions, benchmark functions, and example functions.  See go-testfunc(7) for more.

       By default, go test needs no arguments.	It compiles and tests the package with source in the current directory, including tests, and  runs
       the tests.

       The package is built in a temporary directory so it does not interfere with the non-test installation.

OPTIONS

       In addition to the build flags, the flags handled by 'go test' itself are:

       -c     Compile the test binary to pkg.test but do not run it.

       -i     Install packages that are dependencies of the test.  Do not run the test.

       The  test  binary  also accepts flags that control execution of the test; these flags are also accessible by 'go test'.	See go-testflag(7)
       for details.

       For more about build flags, see go-build(1).

       For more about specifying packages, see go-packages(7).

SEE ALSO

       go-build(1), go-vet(1).

AUTHOR

       This manual page was written by Michael Stapelberg <stapelberg@debian.org>, for the Debian project (and may be used by others).

								    2012-05-13								GO-TEST(1)
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