有個需求，有一堆原始碼，需要給這些程式碼寫cmake檔案。一個檔名的複製貼上太慢。於是就想到採用awk的方式，對文字中的資料進行處理。將c++中的兩種字尾檔案分離出來。
-awk 匹配檔案字尾

BEGIN{
    cline_counter=0;
    hline_counter=0;
}
{
string=$1;
if(match(string,"[.]cc"))
{
    string_include_c[cline_counter]=string;
    cline_counter++;
}
if(match(string,"[.]h"))
{
    string_include_h[hline_counter]=string
 
;
    hline_counter++;
}

}
END{
for(i=0;i<cline_counter;i++)
{
printf("%s\n",string_include_c[i]);
}

for(j=0;j<hline_counter;j++)
{
printf("%s\n",string_include_h[j]);
}
}

 例如，我要處理的文字內容
file.txt

base64.cc
base64.h
bind.h
bitbuffer.cc
bitbuffer.h
bitrateallocationstrategy.cc
bitrateallocationstrategy.h
 

buffer.h
bufferqueue.cc
bufferqueue.h
bytebuffer.cc
bytebuffer.h
byteorder.h
copyonwritebuffer.cc
copyonwritebuffer.h
event_tracer.cc
event_tracer.h
file.cc
file.h
flags.cc
flags.h
function_view.h
ignore_wundef.h
location.cc
location.h
numerics/histogram_percentile_counter.cc
numerics/histogram_percentile_counter.h
 

numerics/mod_ops.h
numerics/moving_max_counter.h
onetimeevent.h
pathutils.cc
pathutils.h
platform_file.cc
platform_file.h
race_checker.cc
race_checker.h
random.cc
random.h
rate_statistics.cc
rate_statistics.h
ratetracker.cc
ratetracker.h
string_to_number.cc
string_to_number.h
swap_queue.h
template_util.h
timestampaligner.cc
timestampaligner.h
trace_event.h
zero_memory.cc
zero_memory.h

 採用awk處理，awk -f cc.awk file >out.txt，最終輸出的out.txt的內容
out.txt

base64.cc
bitbuffer.cc
bitrateallocationstrategy.cc
bufferqueue.cc
bytebuffer.cc
copyonwritebuffer.cc
event_tracer.cc
file.cc
flags.cc
location.cc
numerics/histogram_percentile_counter.cc
pathutils.cc
platform_file.cc
race_checker.cc
random.cc
rate_statistics.cc
ratetracker.cc
string_to_number.cc
timestampaligner.cc
zero_memory.cc
base64.h
bind.h
bitbuffer.h
bitrateallocationstrategy.h
buffer.h
bufferqueue.h
bytebuffer.h
byteorder.h
copyonwritebuffer.h
event_tracer.h
file.h
flags.h
function_view.h
ignore_wundef.h
location.h
numerics/histogram_percentile_counter.h
numerics/mod_ops.h
numerics/moving_max_counter.h
onetimeevent.h
pathutils.h
platform_file.h
race_checker.h
random.h
rate_statistics.h
ratetracker.h
string_to_number.h
swap_queue.h
template_util.h
timestampaligner.h
trace_event.h
zero_memory.h