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tools/hv: reduce resouce usage in hv_get_dns_info helper 

Remove the usage of cat. Replace the shell process with awk with 'exec'.
Also use a generic shell because no bash specific features will be used.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Wei Liu <wei.liu@kernel.org>
Link: https://lore.kernel.org/r/20241202120432.21115-1-olaf@aepfle.de
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20241202120432.21115-1-olaf@aepfle.de>
This commit is contained in:
Olaf Hering 2024-12-02 13:04:10 +01:00 committed by Wei Liu
parent 07dfa6e821
commit a4d024fe2e
1 changed files with 2 additions and 2 deletions
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4
tools/hv/hv_get_dns_info.sh
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@ -1,4 +1,4 @@
#!/bin/bash #!/bin/sh
# This example script parses /etc/resolv.conf to retrive DNS information. # This example script parses /etc/resolv.conf to retrive DNS information.
# In the interest of keeping the KVP daemon code free of distro specific # In the interest of keeping the KVP daemon code free of distro specific
@ -10,4 +10,4 @@
# this script can be based on the Network Manager APIs for retrieving DNS # this script can be based on the Network Manager APIs for retrieving DNS
# entries. # entries.
cat /etc/resolv.conf 2>/dev/null | awk '/^nameserver/ { print $2 }' exec awk '/^nameserver/ { print $2 }' /etc/resolv.conf 2>/dev/null