AK2: make backup only backup when needing backup

osm0sis · osm0sis · commit 7d9d56d45323 · 2017-02-02T18:26:39.000-04:00
diff --git a/tools/ak2-core.sh b/tools/ak2-core.sh
@@ -148,7 +148,7 @@ write_boot() {
 }
 
 # backup_file <file>
-backup_file() { cp $1 $1~; }
+backup_file() { test ! -f $1~ && cp $1 $1~; }
 
 # replace_string <file> <if search string> <original string> <replacement string>
 replace_string() {

Original file line number	Diff line number	Diff line change
`@@ -148,7 +148,7 @@ write_boot() {`
`148`	`148`	`}`
`149`	`149`
`150`	`150`	`# backup_file <file>`
`151`		`-backup_file() { cp $1 $1~; }`
	`151`	`+backup_file() { test ! -f $1~ && cp $1 $1~; }`
`152`	`152`
`153`	`153`	`# replace_string <file> <if search string> <original string> <replacement string>`
`154`	`154`	`replace_string() {`