As advised in the xz man page:
When writing scripts that need to decompress files, it is recommended to
always use the name xz with appropriate arguments (xz -d or xz -dc)
instead of the names unxz and xzcat.
Patch follows:
diff -urdN initramfs-tools.orig/unmkinitramfs initramfs-tools/unmkinitramfs
--- initramfs-tools.orig/unmkinitramfs 2018-07-18 06:50:17.000000000 +0200
+++ initramfs-tools/unmkinitramfs 2018-07-27 09:17:07.000000000 +0200
@@ -14,10 +14,10 @@
dir="$2"
shift 2
- if zcat -t "$archive" >/dev/null 2>&1 ; then
- zcat "$archive"
- elif xzcat -t "$archive" >/dev/null 2>&1 ; then
- xzcat "$archive"
+ if gzip -t "$archive" >/dev/null 2>&1 ; then
+ gzip -c -d "$archive"
+ elif xz -t "$archive" >/dev/null 2>&1 ; then
+ xz -c -d "$archive"
elif lz4cat -t "$archive" >/dev/null 2>&1 ; then
lz4cat "$archive"
elif bzip2 -t "$archive" >/dev/null 2>&1 ; then
Best regards,
Antonio.
