How to use ls with pattern and including path? Post: 302914072

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Top Forums Shell Programming and Scripting How to use ls with pattern and including path? Post 302914072 by Don Cragun on Thursday 21st of August 2014 05:44:06 PM

08-21-2014

Registered User

I apologize for missing the note about ksh working and bash failing. I obviously need more sleep.

Note that if we compare the ls output from bash and ksh, we can see that bash didn't find more files; ls mangled the names of some of the files as it was printing them when invoked from bash. Is ls a bash built-in on your system?

Code:

diff bash_ls_out ksh_ls_out
1,5c1,5
<  3080 -rw-r--r-- 1 bbt voddf 1314 Aug 21 12:12 00zabc-fgkp_1.txt
<  8676 -rw-r--r-- 1 bbt voddf 1886 Aug 21 12:11 0zabc-hjki_1.txt
< 10260 -rw-r--r-- 1 bbt voddf 1048 Aug 21 09:13 zabc-fgkp_1_1.txt
< 10260 -rw-r--r-- 1 bbt voddf 1048 Aug 21 06:26 0zabc-hjki_1_1.txt
< 10260 -rw-r--r-- 1 bbt voddf 1048 Aug 20 19:40 00zabc-hjki_1_2.txt
---
>  8684 -rw-r--r-- 1 bbt voddf  887 Aug 21 12:12 abc-hjki_1.txt
>  3092 -rw-r--r-- 1 bbt voddf  315 Aug 21 12:12 abc-fgkp_1.txt
> 10260 -rw-r--r-- 1 bbt voddf 1048 Aug 21 09:13 abc-fgkp_1_1.txt
> 10260 -rw-r--r-- 1 bbt voddf 1048 Aug 21 06:26 abc-hjki_1_1.txt
> 10260 -rw-r--r-- 1 bbt voddf 1048 Aug 20 19:40 abc-hjki_1_2.txt

Unless the files shown in red were being written between the invocations of ls, the ls invoked from bash not only mangled the names, it also mangled the i-node numbers, sizes, and timestamps.

Are we having fun yet???

Don Cragun

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syscallbyproc.d

syscallbyproc.d(1m)						   USER COMMANDS					       syscallbyproc.d(1m)

NAME

       syscallbyproc.d - syscalls by process name. Uses DTrace.

SYNOPSIS

       syscallbyproc.d

DESCRIPTION

       syscallbyproc.d is a DTrace OneLiner to a report of the number of system calls made by process name.

       This is useful to identify which process is causing the most system calls.

       Docs/oneliners.txt and Docs/Examples/oneliners_examples.txt in the DTraceToolkit contain this as a oneliner that can be cut-n-paste to run.

       Since this uses DTrace, only users with root privileges can run this command.

EXAMPLES

       This samples until Ctrl-C is hit.
	      # syscallbyproc.d

FIELDS

       first field
	      This  is the process name. There may be several PIDs that have the same process name, for example with numerous instances of "bash".
	      The value reported will be the sum of them all.

       second field
	      This is the count, the number of system calls made.

DOCUMENTATION

       See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
       bose descriptions explaining the output.

EXIT

       syscallbyproc.d will sample until Ctrl-C is hit.

AUTHOR

       Brendan Gregg [Sydney, Australia]

SEE ALSO

       procsystime(1M), dtrace(1M), truss(1)

version 1.00							   May 15, 2005 					       syscallbyproc.d(1m)