linux - diff 命令不起作用(参数麻烦)

Question

尝试通过输入 next 来比较:

$ diff -c $(rpm -qpR prev/p.src.rpm 2>/dev/null) $(rpm -qpR curr/p.src.rpm 2>/dev/null)

diff: extra operand `<='
diff: Try `diff --help' for more information.

如何更改正常脚本工作的参数？

Answer 1

你能试试这样执行脚本吗:

$ diff -c <(rpm -qpR prev/p.src.rpm 2>/dev/null) <(rpm -qpR curr/p.src.rpm 2>/dev/null)

这应该将“<()”之间的命令替换为一个过程。这将创建一个命名管道，并将它们作为文件提供给 diff 进行比较。允许您直接在脚本中执行上述操作。