shell编程(课件第7章)

============shell 参数传递======================
P2
[soflib@localhost ~]$ cat args
echo $# arguments passed
echo arg 1=:$1,arg 2=:$2,arg 3=:$3
[soflib@localhost ~]$ ./args a b c
3 arguments passed
arg 1=:a,arg 2=:b,arg 3=:c
[soflib@localhost ~]$ ./args x*
1 arguments passed
arg 1=:x*,arg 2=:,arg 3=:
[soflib@localhost ~]$

p3
[soflib@localhost ~]$ cat arg2
echo $# arguments passed
echo they are:$*:
[soflib@localhost ~]$ ./arg2 a b c
3 arguments passed
they are:a b c:
[soflib@localhost ~]$

p4
[soflib@localhost ~]$ cat m1.c
main(){
printf("Begin/n");
}
[soflib@localhost ~]$ vi m2.c
[soflib@localhost ~]$ cat m2.c
#include <stdio.h>
main(){
prinf("ok!/n");
}
[soflib@localhost ~]$ vi biao
[soflib@localhost ~]$ cat biao
cat $1 $2 |wc -l
[soflib@localhost ~]$ chmod +x biao
[soflib@localhost ~]$ ./biao m1.c m2.c
7
[soflib@localhost ~]