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-rw-r--r--lib/backup/builds.rb6
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/backup/builds.rb b/lib/backup/builds.rb
index 52c6089..9746d24 100644
--- a/lib/backup/builds.rb
+++ b/lib/backup/builds.rb
@@ -13,6 +13,9 @@ module Backup
FileUtils.mkdir_p(File.dirname(backup_builds_tarball))
FileUtils.rm_f(backup_builds_tarball)
+ # Use 'tar -czf -' instead of 'tar -cz' because on some systems the
+ # default behavior of tar is to talk to a tape device instead of
+ # stdin/stdout.
system(
*%W(tar -C #{app_builds_dir} -czf - -- .),
out: [backup_builds_tarball, 'w', 0600]
@@ -23,6 +26,9 @@ module Backup
backup_existing_builds_dir
Dir.mkdir(app_builds_dir, 0700)
+ # Use 'tar -xzf -' instead of 'tar -xz' because on some systems the
+ # default behavior of tar is to talk to a tape device instead of
+ # stdin/stdout.
system(
*%W(tar -C #{app_builds_dir} -xzf - -- .),
in: backup_builds_tarball