Created
June 7, 2014 09:16
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Bash string slice
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| string_slice() | |
| { | |
| [ -z $2 ] && echo "Usage: string_slice \"string\" start [end]" && return | |
| string=$1 | |
| local len="${#string}" | |
| local start="$2" | |
| local end="$3" | |
| :${end:=0} | |
| if [ ${start} -lt 0 ]; then | |
| start=$((${len} + ${start})) | |
| fi | |
| if [ ${end} -le 0 ]; then | |
| end=$((${len} + ${end})) | |
| fi | |
| start=$((${start} + 1)) | |
| (echo "${string}" | cut -c ${start}-${end}) 2> /dev/null | |
| } |
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