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fix some typo

This commit is contained in:
summer-wu 2015-10-07 21:14:45 +08:00
parent 91c28712e6
commit 84df17a0f6
1 changed files with 7 additions and 7 deletions
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14
cheat/cheatsheets/tr
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@ -2,20 +2,20 @@
echo $PATH|tr ":" "\n" #equivalent with: echo $PATH|tr ":" "\n" #equivalent with:
echo $PATH|tr -t ":" \n echo $PATH|tr -t ":" \n
#remove all occurance of "ab"
echo aabbcc |tr -d "ab"
#complement "aa" #complement "aa"
echo aabbccd |tr -c "aa" 1 echo aabbccd |tr -c "aa" 1
#output: aa11111% #output: aa11111 without new line
#tip: Complement meaning keep aa,all other is replace with 1 #tip: Complement meaning keep aa,all others are replaced with 1
#complement "ab\n" #complement "ab\n"
echo aabbccd |tr -c "ab\n" 1 echo aabbccd |tr -c "ab\n" 1
#output: aabb111 with new line #output: aabb111 with new line
#Preserve all alpha(-c). ":-[:digit:] etc" will translate to "\n". sequeeze mode. #Preserve all alpha(-c). ":-[:digit:] etc" will be translated to "\n". sequeeze mode.
echo $PATH|tr -cs "[:alpha:]" "\n" echo $PATH|tr -cs "[:alpha:]" "\n"
#ordered list to unordered list #ordered list to unordered list
echo "1 /usr/bin\n2 /bin" |tr -cs "/\n[:alpha:]" "+" echo "1. /usr/bin\n2. /bin" |tr -cs " /[:alpha:]\n" "+"
#remove all occurance of "ab"
echo aabbcc |tr -d "ab"