if I have a file test.txt:
example 1 content 2013-3-8: hello java example 2 content 2013-4-9: hello c how can I use awk or sed to seperate the test.txt to two file
test1
hello java test2
hello c I use the command below:
awk '/example/{i++}{print > "test"i}' test.txt but it will remain the first line(example xxx), can I add some fragment to the print in awk to delete the first line?
You almost have it:
awk '/^example/ { i++; next } { print >"test"i}' the next makes awk skip the rest of the statements.
Some weird way of doing this with sed:
sh <<< $(sed '/example/{N;s/\n//;s/example \([0-9]*\).*:\(.*\)/echo "\2" >> test\1;/}' input) This might work for you (GNU sed):
sed -ne '2~4w test1.txt' -e '4~4w test2.txt' test0.txt You could try something like :
awk 'BEGIN {i=0; j=0} /example/{i++; j=0} (j != 0){print > "test"i} {j++}' test.txt 
sed -n " /example 1/ {N;s/^.*\n// w test1.txt } /example 2/ {N;s/^.*\n// w test2.txt }" test.txt if you define a delimiter between section (define size or marker), there could be more text to put in each file
To complete the response from Alok Singhal: if you reach the "too many open files" limit on linux, you have to close the files in line.
awk '/^example/ {close("test" i); i++; next } { print >"test" i}' 