echo palsec | gsed 's/\(.*\)/\U\1/'
http://nixcraft.com/shell-scripting/15862-sed-convert-text-lower-upper-case.html
http://www.gnu.org/software/sed/manual/sed.html#Execution-Cycle
gsed 字符串转大小写转换
echo palsec | gsed 's/\(.*\)/\U\1/'
http://nixcraft.com/shell-scripting/15862-sed-convert-text-lower-upper-case.html
http://www.gnu.org/software/sed/manual/sed.html#Execution-Cycle
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