root/bin/in_place @ 4441
| 1 | 349 | aaronmk | #!/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 | 3755 | aaronmk | onExit () { rm -f "$temp"; } |
| 10 | trap onExit EXIT
|
||
| 11 | 349 | aaronmk | |
| 12 | 3754 | aaronmk | "$@" <"$file" >"$temp" || exit # don't update file on error |
| 13 | 349 | aaronmk | diff "$file" "$temp" >/dev/null && exit # don't update file if no change |
| 14 | mv "$temp" "$file" |