Linux test command Post: 53443

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Operating Systems Linux Linux test command Post 53443 by Ygor on Thursday 15th of July 2004 06:23:35 AM

07-15-2004

Registered User

Another way to test for files

Code:

if ls /home/pv/T20* >/dev/null 2>&1
then
    echo true
fi

However, this would return true for directories and empty files. Since you want to do some processing on the files why not use a for loop...

Code:

for file in $(ls /home/pv/T20*)
do
   [ -s $file ] || continue
   echo do something with $file
   :
done

If there are no files then the code within the for loop is not executed and this message is sent to standard error: "/home/pv/T20* not found"

PS: It is not good practice to rely on "if test -f" for multiple files. Here's why (on HP-UX)....

$ ls *.txt
b.txt c.txt
$ if test -f *.txt
> then
> echo true
> else
> echo false
> fi
true
$ mkdir a.txt
$ if test -f *.txt
> then
> echo true
> else
> echo false
> fi
false

Ygor

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tpm_selftest

tpm_selftest(8) 					      System Manager's Manual						   tpm_selftest(8)

							  TPM Management - tpm_selftest

NAME

       tpm_selftest - request TPM perform selftest and report

SYNOPSIS

       tpm_selftest [OPTION]

DESCRIPTION

       tpm_selftest requests that the system's TPM perform a self test (via the TPM_SelfTestFull API) and report the results. The --results option
       reports the outcome of the last self test operation without requesting that another test be executed. If the TPM fails the self test, it
       enters failure mode where no commands are accepted. The results are reported in a manufacturer specific format. The TPM's self test is
       always executed automatically at every boot.

       -h, --help
	      Display command usage info.

       -v, --version
	      Display command version info.

       -l, --log [none|error|info|debug]
	      Set logging level.

       -r, --results
	      Report results only.

SEE ALSO

       tpm_version(1), tpm_takeownership(8), tpm_setownable(8), tcsd(8)

REPORTING BUGS

       Report bugs to <trousers-users@lists.sourceforge.net>

TPM Management							    2005-04-25							   tpm_selftest(8)