linux - 如何zgrep多个字符串

Question

我正在尝试使用下面的代码对多个字符串进行 zgrep，但是如果我省略其中一个参数，它会生成大量不匹配的文件。但是，我输入了它正常工作的所有 5 个字符串。我怎样才能 zgrep 任意数量的字符串，即使它只是 5 个字符串中的 3 个。

echo "Enter string 1: "
read isdn1
echo "Enter string 2: "
read isdn2
echo "Enter string 3: "
read isdn3
echo "Enter string 4: "
read isdn4
echo "Enter string 5: "
read isdn5

for host in $(cat host.txt); do ssh "$host" "cd /onip/cdr/output/snapshot/normal/backup && zgrep '$isdn1\|$isdn2\|$isdn3\|$isdn4\|$isdn5' xyz_shot*"

Answer 1

试试这个:

echo "Enter string 1: "
read isdn1
echo "Enter string 2: "
read isdn2
echo "Enter string 3: "
read isdn3
echo "Enter string 4: "
read isdn4
echo "Enter string 5: "
read isdn5

grep_str=`echo "$isdn1|$isdn2|$isdn3|$isdn4|$isdn5"|perl -pe 's/\|\||\|$//'`
for host in $(cat host.txt); do ssh "$host" "cd /onip/cdr/output/snapshot/normal/backup && zgrep '$grep_str' xyz_shot*"