[bug] rpm/build.sh failed due to sed usage

[Letty5411]

Ⅰ. Issue Description

build rpm failed with error message:

+ git clone -b stable-2.0 https://github.com/lxc/lxcfs.git
Cloning into 'lxcfs'...
remote: Counting objects: 1821, done.
remote: Compressing objects: 100% (18/18), done.
remote: Total 1821 (delta 11), reused 16 (delta 7), pack-reused 1796
Receiving objects: 100% (1821/1821), 760.33 KiB | 265.00 KiB/s, done.
Resolving deltas: 100% (1035/1035), done.
+ cd lxcfs
++ uniq
++ awk -F: '{print $1}'
++ grep -r liblxcfs .
+ sed -i s/liblxcfs/libpouchlxcfs/g './tests/main.sh
./tests/test_reload.sh
./lxcfs.c
./Makefile.am
./bindings.c'
sed: can't read ./tests/main.sh
./tests/test_reload.sh
./lxcfs.c
./Makefile.am
./bindings.c: No such file or directory

This should fix as following:

# git diff
diff --git a/hack/package/rpm/build.sh b/hack/package/rpm/build.sh
index 12bbf82..4fa5f3a 100755
--- a/hack/package/rpm/build.sh
+++ b/hack/package/rpm/build.sh
@@ -37,11 +37,12 @@ VENDOR='Pouch'
 # build lxcfs
 function build_lxcfs ()
 {
+       set -x
     pushd "$LXC_DIR"
     git clone -b "$LXC_BRANCH" https://github.com/lxc/lxcfs.git && cd lxcfs

     # change liblxcfs.so to libpouchlxcfs.so
-    sed -i 's/liblxcfs/libpouchlxcfs/g' "$(grep -r "liblxcfs" . |awk -F':' '{print $1}'|uniq )"
+    sed -i 's/liblxcfs/libpouchlxcfs/g' $(grep -r "liblxcfs" . |awk -F':' '{print $1}'|uniq )
     ./bootstrap.sh > /dev/null 2>&1
     ./configure > /dev/null 2>&1
     make install DESTDIR="$LXC_DIR" > /dev/null 2>&1

However this usage will trigger the shell CI failed.

Ⅱ. Describe what happened

Ⅲ. Describe what you expected to happen

Ⅳ. How to reproduce it (as minimally and precisely as possible)

Ⅴ. Anything else we need to know?

Ⅵ. Environment:

• pouch version (use pouch version):
• OS (e.g. from /etc/os-release):
• Kernel (e.g. uname -a):
• Install tools:
• Others:

[allencloud]

cc @zhuangqh
Could you help to take a look at this? Since I think it was introduced by shellcheck.

[fuweid]

Since we use "", the sed considers ./tests/main.sh ./tests/test_reload.sh ./lxcfs.c ./Makefile.am ./bindings.c as one file. However, we can use xargs to make the command clear than before. @Letty5411 @zhuangqh