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| Thread | Thread Starter | Forum | Replies | Last Post |
| while loop inside while loop | panknil | Shell Programming and Scripting | 0 | 01-07-2008 12:49 PM |
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| how to get the similar function in while loop or for loop | trynew | Shell Programming and Scripting | 3 | 06-17-2002 12:09 PM |
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01-30-2007
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while loop help
data:
1234567890abcdefghij1234567890... code: cut -b1-10 data >> data1 cut -b11-20 data >> data1 cut -b21-30 data >> data1 my result: 1234567890 abcdefghij 1234567890 ......... How my codes should be if I would use "while syntax" coding? |
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01-31-2007
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Quote:
instead of while , u can use the awk which is very flexible enough to handle the task, since while suffers in searching a text |
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01-31-2007
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Code:
sed 's/\(.\{10\}\)\(.\{10\}\)\(.*\)/\1\
\2\
\3/' filename
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01-31-2007
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To loop through a string, 10 characters at a time:
Code:
$ cat looper
#! /usr/bin/ksh
string=aaaaaaaaaabbbbbbbbbccccccccccddddddddddeeeeeeeeeefffffffffffgggggggggg
typeset -L10 tenchr
while ((${#string})); do
if ((${#string} > 10)); then
tenchr=$string
piece=$tenchr
string=${string#$piece}
else
piece=$string
string=""
fi
echo $piece $string
done
exit 0
$ ./looper
aaaaaaaaaa bbbbbbbbbccccccccccddddddddddeeeeeeeeeefffffffffffgggggggggg
bbbbbbbbbc cccccccccddddddddddeeeeeeeeeefffffffffffgggggggggg
cccccccccd dddddddddeeeeeeeeeefffffffffffgggggggggg
ddddddddde eeeeeeeeefffffffffffgggggggggg
eeeeeeeeef ffffffffffgggggggggg
ffffffffff gggggggggg
gggggggggg
$
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