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using a pipe and avoiding the use of the stdin file descriptor

Akhil Jalagam
2023-08-22 20:06:33 +05:30
parent d0f0fc40a1
commit 9df8e616d9
1 changed files with 13 additions and 0 deletions
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13
SC2095.md

@@ -30,6 +30,19 @@ uptime
EOF
done < hosts.txt
```
or
By using a pipe and avoiding the use of the stdin file descriptor, this ensures that commands in the loop are not interfered with.
```sh
exec 3< hosts.txt
while read -r host
do
ssh "$host" "uptime"
done <&3
# Close the file descriptor
exec 3<&-
```
### Rationale: