我想在awk脚本中更改工作目录:
...
path="./some/path"
system("pwd") ; \
current_dir=system("pwd") ; \
pushd_cmd="pushd " path ; \ # a "cd" doesn't work too
print pushd_cmd ; \
system(pushd_cmd) ; \
system("pwd"); \ # the same directory as before
type="xml"
ls_cmd = "ls *." type; # so I can't find the files. Specifying with "./some/path/*.xml" doesn't work too (without trying to change the working directory)
...
有人知道为什么系统对我的情况没有影响吗?
答案 0 :(得分:4)
system
将启动一个子流程,子流程不能改变其父流程的工作目录。
快速Google搜索会显示GNU AWK文档的以下部分:http://www.delorie.com/gnu/docs/gawk/gawk_252.html
似乎暗示标准AWK没有更改工作目录的方法。 (在GNU AWK中,您可以使用chdir
进行操作。)