| 1 | #Newsgroups: comp.unix.shell
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| 2 | #From: [email protected] (Geoff Clare)
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| 3 | #Subject: Re: Determining permissions on a file
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| 4 | #Message-ID: <[email protected]>
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| 5 | #Date: Fri, 10 May 1996 17:23:56 GMT
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| 6 |
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| 7 | #Here's a bit of Korn shell that converts the symbolic permissions produced
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| 8 | #by "ls -l" into octal, using only shell builtins. How to create a script
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| 9 | #combining this with an "ls -l" is left as an exercise...
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| 10 | #
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| 11 | #
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| 12 | # Converted to Bash v2 syntax by Chet Ramey <[email protected]>
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| 13 | #
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| 14 | # usage: showperm modestring
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| 15 | #
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| 16 | # example: showperm '-rwsr-x--x'
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| 17 | #
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| 18 |
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| 19 | [ -z "$1" ] && {
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| 20 | echo "showperm: usage: showperm modestring" >&2
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| 21 | exit 2
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| 22 | }
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| 23 |
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| 24 | tmode="$1"
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| 25 |
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| 26 | typeset -i omode sbits
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| 27 | typeset pmode
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| 28 |
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| 29 | # check for set-uid, etc. bits
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| 30 | sbits=0
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| 31 | case $tmode in
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| 32 | ???[sS]*) (( sbits += 8#4000 )) ;; # set-uid
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| 33 | ??????[sSl]*) (( sbits += 8#2000 )) ;; # set-gid or mand. lock
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| 34 | ?????????[tT]*) (( sbits += 8#1000 )) ;; # sticky
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| 35 | esac
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| 36 |
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| 37 | omode=0
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| 38 | while :
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