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-rw-r--r--sys/src/cmd/file.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/src/cmd/file.c b/sys/src/cmd/file.c
index 9a1c904e7..ba530defc 100644
--- a/sys/src/cmd/file.c
+++ b/sys/src/cmd/file.c
@@ -1180,6 +1180,9 @@ ismung(void)
if(buf[0]=='B' && buf[1]=='Z' && buf[2]=='h')
print(mime ? "application/x-bzip2" : "bzip2 compressed\n");
else
+ if(buf[0]==0x78 && buf[1]==0x9c)
+ print(mime ? "application/x-deflate" : "zlib compressed\n");
+ else
print(mime ? OCTET : "encrypted\n");
return 1;
}