mirror of
https://github.com/chubin/cheat.sh.git
synced 2026-06-20 21:26:44 +02:00
Igor Chubin
57 lines
1.5 KiB
Bash
Executable File
57 lines
1.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Contributed by Erez Binyamin (github.com/ErezBinyamin)
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# Translate between chmod string and number
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# Contrib to chubin - cheat.sh
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chmod_calc(){
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p_s=""
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p_n=""
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R=()
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W=()
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X=()
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# If permission number is given calc string
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if [[ $1 =~ ^-?[0-9]+$ ]]
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then
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p_n=$1
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for (( i=0; i<${#1}; i++ ))
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do
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num=$(echo "obase=2;${1:$i:1}" | bc | xargs printf '%03d')
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[ ${num:0:1} -eq 1 ] && p_s+='r' || p_s+='-'
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[ ${num:1:1} -eq 1 ] && p_s+='w' || p_s+='-'
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[ ${num:2:1} -eq 1 ] && p_s+='x' || p_s+='-'
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[ ${num:0:1} -eq 1 ] && R+=('X') || R+=(' ')
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[ ${num:1:1} -eq 1 ] && W+=('X') || W+=(' ')
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[ ${num:2:1} -eq 1 ] && X+=('X') || X+=(' ')
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done
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# If permission string is given calc number
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else
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p_s=$1
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for (( i=0; i<${#1}; i+=0 ))
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do
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num=0
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[[ ${1:$i:1} == 'r' ]] && R+=('X') || R+=(' ')
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[[ ${1:$((i++)):1} == 'r' ]] && let num++
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num=$(( num << 1 ))
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[[ ${1:$i:1} == 'w' ]] && W+=('X') || W+=(' ')
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[[ ${1:$((i++)):1} == 'w' ]] && let num++
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num=$(( num << 1 ))
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[[ ${1:$i:1} == 'x' ]] && X+=('X') || X+=(' ')
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[[ ${1:$((i++)):1} == 'x' ]] && let num++
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p_n+="$num"
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done
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fi
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printf "
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Linux Permissions String:\t${p_s}
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Linux Permissions Number:\t${p_n}
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Owner\t\tGroup\t\tPublic
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Read [${R[0]}]\tRead [${R[1]}]\tRead [${R[2]}]
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Write [${W[0]}]\tWrite [${W[1]}]\tWrite [${W[2]}]
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Execute [${X[0]}]\tExecute [${X[1]}]\tExecute [${X[2]}]
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"
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}
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chmod_calc $@
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