linux trap
trap [-lp] [arg] [sigspec ...]
µ± shell ÊÕµ½ÐźŠsigspec ʱ£¬ÃüÁî arg ½«±»¶ÁÈ¡²¢Ö´ÐС£Èç¹ûûÓиø³ö arg »òÕ߸ø³öµÄÊÇ -,
ËùÓÐÖ¸¶¨µÄÐźű»ÉèÖÃΪËüÃǵijõʼֵ (½øÈë shell ʱËüÃǵÄÖµ)¡£Èç¹û arg ÊÇ¿Õ×Ö·û´®£¬ sigspec Ö¸¶¨µÄÐźű»
shell ºÍËüÆô¶¯µÄÃüÁîºöÂÔ¡£Èç¹û arg ²»´æÔÚ£¬²¢ÇÒ¸ø³öÁË -p ÄÇôÓëÿ¸ö sigspec
Ïà¹ØÁªµÄÏÝÚåÃüÁ±»ÏÔʾ³öÀ´¡£Èç¹ûûÓиø³öÈκβÎÊý£¬»òÖ»¸ø³öÁË -p£¬ trap ½«´òÓ¡³öÓëÿ¸öÐźűàºÅÏà¹ØµÄÃüÁîÁбí▒ ÿ¸ö
sigspec ¿ÉÒÔÊÇ ¶¨ÒåµÄÐźÅÃû£¬»òÊÇÒ»¸öÐźűàºÅ¡£ Èç¹û sigspec ÊÇ EXIT (0)£¬ÃüÁî
arg ½«ÔÚ shell Í˳öʱִÐС£Èç¹û sigspec ÊÇ DEBUG, ÃüÁî arg ½«ÔÚÿ¸ö¼òµ¥ÃüÁî (simple
command£¬²Î¼ûÉÏÃæµÄ SHELL GRAMMAR) Ö®ºóÖ´ÐС£Èç¹û sigspec ÊÇ ERR, ÃüÁî arg
½«ÔÚÈκÎÃüÁîÒÔ·ÇÁãÖµÍ˳öʱִÐС£Èç¹ûʧ°ÜµÄÃüÁîÊÇ until »ò while Ñ»·µÄÒ»²¿·Ö£¬ if Óï¾äµÄÒ»²¿·Ö£¬ && »ò
⎪⎪ ÐòÁеÄÒ»²¿·Ö£¬»òÕßÃüÁîµÄ·µ»ØÖµÊÇͨ¹ý ! ת»¯¶øÀ´£¬ ERR ÏÝÚ彫²»»áÖ´ÐС£Ñ¡Ïî -l ʹµÃ shell
´òÓ¡ÐźÅÃûºÍ¶ÔÓ¦±àºÅµÄÁÐ±í¡£ shell ºöÂÔµÄÐźŲ»Äܱ»²¶×½»òÖØÖá£ÔÚ×Ó½ø³ÌÖУ¬±»²¶×½µÄÐźÅÔÚ½ø³Ì´´½¨Ê±±»ÖØÖÃΪ
³õʼֵ¡£
·µ»ØÖµÎª¼Ù£¬Èç¹û sigspec ·Ç·¨£»·ñÔò trap ·µ»ØÕæ¡£
Ïà¹ØÎĵµ£º
1¡¢
½«Îļþcheckoutµ½±¾µØÄ¿Â¼
svn
checkout
path£¨pathÊÇ·þÎñÆ÷ÉϵÄĿ¼£©
ÀýÈ磺svn
checkout svn
://192.168
.1.1
/pro/domain
¼òд£ºsvn
co
2¡¢
Íù°æ±¾¿âÖÐÌí¼ÓеÄÎļþ
svn
add
file
ÀýÈ磺svn
add test.php(Ìí¼Ótest.php)
svn
add *.php(Ìí¼Óµ±Ç°Ä¿Â¼ÏÂËùÓеÄphpÎļþ)
3¡¢
½«¸Ä¶¯ ......
vi adduser.sh È»ºó°ÑÈçÏ´úÂëÌùÈë¡£±£´æµ½CVSROOTĿ¼Ï¡£
#!/bin/bash
#add cvs users
while [ -n "$(echo $1|grep '^_')"];
do
case $1 in
-u) param=$2
echo -e "$param:\c" >>passwd
shift ;;
-p) param=$2
echo -e `./passwdgen.pl $param`":cvsroot" >> passwd;;
*)
exit 1
esac
shift
......
¡¡¢Ù¼ò½é
¡¡¡¡DNS¾ÍÊÇDomain Name System£¬ËüÄܹ»°ÑÐÎÈçwww.21php.comÕâÑùµÄÓòÃûת»»Îª211.152.50.35ÕâÑùµÄIPµØÖ·£»Ã»ÓÐDNS£¬ä¯ÀÀ21php.com Õâ¸öÍøÕ¾Ê±£¬¾Í±ØÐëÓÃ211.152.50.35ÕâôÄѼǵÄÊý×ÖÀ´·ÃÎÊ¡£ÌṩDNS·þÎñµÄ¾ÍÊÇDNS·þÎñÆ÷¡£DNS·þÎñÆ÷¿ÉÒÔ·ÖΪÈýÖÖ£¬¸ßËÙ»º´æ·þÎñÆ÷ (Cache-only server)¡¢Ö÷·þÎñÆ÷(Primary Name serv ......
DHCPÊÇDynamic Host Configuration ProtocolµÄÓ¢ÎÄËõд£¬·Òë¹ýÀ´¾ÍÊǶ¯Ì¬Ö÷»úÅäÖÃͨѶÐÒé¡£ËüµÄ¹¦ÄܾÍÊÇÎªÍøÂçÁ¬½Ó¶¯Ì¬·ÖÅäIPµØÖ·£¬ËüÔÊÐí¿Í»§¶Ë¼ÆËã»úÏòÍøÂç·þÎñÆ÷×Ô¶¯»ñÈ¡ÍøÂçÉèÖá£DHCP·þÎñÆ÷ʹµÃÍøÂç¹ÜÀíÔ±ÔÚ¹ÜÀíÍøÂçÖÐÔÚÍøÂçÖÐÔö¼Ó¡¢É¾³ýÍøÂç½Úµã»òÕßÖØÐÂÅäÖÃÍøÂçʱ£¬¹¤×÷±äµÃ·Ç³£¼òµ¥£¬ÎÞÐëÊÖ¹¤µÄ·ÖÅäIPµØÖ ......