root/bin/in_place @ 1643
| 1 |
#!/bin/sh
|
|---|---|
| 2 |
# Runs a stream command on a file
|
| 3 |
# Usage: self file command
|
| 4 |
|
| 5 |
file="$1" |
| 6 |
shift
|
| 7 |
|
| 8 |
temp="$(tempfile)" |
| 9 |
trap "rm -f $temp" EXIT |
| 10 |
|
| 11 |
"$@" <"$file" >"$temp" || exit |
| 12 |
diff "$file" "$temp" >/dev/null && exit # don't update file if no change |
| 13 |
mv "$temp" "$file" |