shell record

ls /tmp |grep 'sess_'|xargs -i rm /tmp/{}

ls *.php|xargs -i sed -i 's/confirm("修改?")/confirm("确认修改吗?")/g' {}

[ctags]

sudo ctags -R --c-kinds=+p --language-force=c --fields=+iaS --extra=+q /usr/include/

删除目录下.svn文件夹

find ./ -type d -name '.svn' -exec rm -rf '{}' ';'

option describe:

 -exec command;

[awk]

echo "blah foo123bar blah"| awk '{match($2,"[a-z]+[0-9]+",a)}END{print a[0]}'

[for]

key value

for i in"${!array[@]}"do
  echo "key  : $i"
  echo "value: ${array[$i]}"done