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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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9
Task/Substring/UNIX-Shell/substring-1.sh Normal file
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str="abc qrdef qrghi"
n=6
m=3
expr "x$str" : "x.\{$n\}\(.\{1,$m\}\)"
expr "x$str" : "x.\{$n\}\(.*\)"
printf '%s\n' "${str%?}"
expr "r${str#*r}" : "\(.\{1,$m\}\)"
expr "qr${str#*qr}" : "\(.\{1,$m\}\)"