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Full Discussion: Convert UNIX rights in a number in a sh script
Top Forums Shell Programming and Scripting Convert UNIX rights in a number in a sh script Post 302941173 by Chubler_XL on Monday 13th of April 2015 04:23:30 PM
Old 04-13-2015
You could try something like this is bash/ksh

Code:
mode="-rwxr-x---"
v=${mode#?}
v=${v//-/0}
v=${v//[rwx]/1}
printf "%03o\n" $((2#$v))

Output:
Code:
750

Have you considered special file permissions (sticky bit, suid and sgid)? Perhaps you will need somthing like this:

Code:
#!/bin/sh
mode="-rwsr-x--x"
spec=$(echo $mode | sed 's/^...\(.\)..\(.\)..\(.\)/\1\2\3/')
spec=${spec//[x-]/0}
spec=${spec//[sStT]/1}
v=${mode#?}
v=${v//[-ST]/0}
v=${v//[rwxst]/1}
if [ $spec -gt 0 ]
then
   printf "%o%03o\n" $((2#$spec)) $((2#$v))
else
    printf "%03o\n" $((2#$v))
fi

output:
Code:
4751

Last edited by Chubler_XL; 04-13-2015 at 05:51 PM..
This User Gave Thanks to Chubler_XL For This Post:
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LEARN ABOUT DEBIAN

shtool-path

SHTOOL-PATH.TMP(1)					      GNU Portable Shell Tool						SHTOOL-PATH.TMP(1)

NAME

       shtool-path - GNU shtool command dealing with shell path variables

SYNOPSIS

       shtool path [-s|--suppress] [-r|--reverse] [-d|--dirname] [-b|--basename] [-m|--magic] [-p|--path path] str [str ...]

DESCRIPTION

       This command deals with shell $PATH variables. It can find a program through one or more filenames given by one or more str arguments.  It
       prints the absolute filesystem path to the program displayed on "stdout" plus an exit code of 0 if it was really found.

OPTIONS

       The following command line options are available.

       -s, --suppress
	   Supress output. Useful to only test whether a program exists with the help of the return code.

       -r, --reverse
	   Transform a forward path to a subdirectory into a reverse path.

       -d, --dirname
	   Output the directory name of str.

       -b, --basename
	   Output the base name of str.

       -m, --magic
	   Enable advanced magic search for ""perl"" and ""cpp"".

       -p, --path path
	   Search in path. Default is to search in $PATH.

EXAMPLE

	#   shell script
	awk=`shtool path -p "${PATH}:." gawk nawk awk`
	perl=`shtool path -m perl`
	cpp=`shtool path -m cpp`
	revpath=`shtool path -r path/to/subdir`

HISTORY

       The GNU shtool path command was originally written by Ralf S.  Engelschall <rse@engelschall.com> in 1998 for Apache. It was later taken
       over into GNU shtool.

SEE ALSO

       shtool(1), which(1).

18-Jul-2008							   shtool 2.0.8 						SHTOOL-PATH.TMP(1)
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