From 59873118094ef8238ba73b7720493dd855cf7af8 Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Fri, 20 Feb 2026 23:03:46 +0800
Subject: hehe

---
 backup.sh  | 24 ------------------------
 tarship.sh | 35 +++++++++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+), 24 deletions(-)
 delete mode 100755 backup.sh
 create mode 100755 tarship.sh

diff --git a/backup.sh b/backup.sh
deleted file mode 100755
index 6e54e8e..0000000
--- a/backup.sh
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/bin/bash
-set -e
-
-[ $# -ne 3 ] && echo "Usage: $0 <dir-to-backup> <tarfile-name> <user@host:/remote/dir>" && exit 1
-
-SRC="$1"
-NAME="$2"
-DEST="$3"
-
-[ ! -d "$SRC" ] && echo "Error: '$SRC' is not a directory" && exit 1
-
-TARFILE="$(pwd)/${NAME}.tar.gz"
-
-echo "Compressing $SRC → $TARFILE"
-tar -czf "$TARFILE" -C "$(dirname "$SRC")" "$(basename "$SRC")"
-
-SIZE=$(du -h "$TARFILE" | cut -f1)
-echo "Size: $SIZE"
-
-echo "Sending to $DEST"
-rsync -avP "$TARFILE" "$DEST/"
-
-rm -f "$TARFILE"
-echo "Done"
diff --git a/tarship.sh b/tarship.sh
new file mode 100755
index 0000000..661d77b
--- /dev/null
+++ b/tarship.sh
@@ -0,0 +1,35 @@
+#!/bin/bash
+set -e
+USAGE="Usage: $0 {backup /dir [user@host:]/dest | restore file.tar.gz}"
+dnf install -y tar pigz pv openssh-clients &>/dev/null || exit 1
+
+case "${1:?$USAGE}" in
+backup)
+    SRC="${2:?$USAGE}" DEST="${3:?$USAGE}" NAME="$(basename "$SRC").tar.gz"
+    [ ! -d "$SRC" ] && echo "Error: not a directory: $SRC" && exit 1
+    du -sh "$SRC"; SIZE=$(du -sb "$SRC" | awk '{print $1}'); LHASH=$(mktemp); trap "rm -f $LHASH" EXIT
+    if [[ "$DEST" == *:* ]]; then # remote: tar+pigz stream over ssh, tee hash both sides
+        H="${DEST%%:*}" D="${DEST#*:}"; echo "→ ${H}:${D}/${NAME}"
+        RHASH=$(tar cf - "$SRC" | pv -s "$SIZE" | pigz -1 | tee >(sha256sum | awk '{print $1}' > "$LHASH") | ssh "$H" "h=\$(tee ${D}/${NAME} | sha256sum | awk '{print \$1}'); echo \$h > ${D}/${NAME}.sha256; echo \$h")
+        L=$(cat "$LHASH"); echo "Local:  $L"; echo "Remote: $RHASH"
+        [ "$L" = "$RHASH" ] && echo "Checksum OK" || { echo "CHECKSUM MISMATCH!"; exit 1; }
+        echo "Verify:  ssh $H \"sha256sum ${D}/${NAME}\""
+    else # local: tar+pigz to file, write .sha256 sidecar
+        echo "→ $DEST/$NAME"
+        tar cf - "$SRC" | pv -s "$SIZE" | pigz -1 > "$DEST/$NAME"
+        sha256sum "$DEST/$NAME" | awk '{print $1}' > "$DEST/$NAME.sha256"
+        echo "Checksum: $(cat "$DEST/$NAME.sha256")"
+        echo "Verify:  sha256sum $DEST/$NAME"
+    fi ;;
+restore)
+    FILE="${2:?$USAGE}"
+    [[ "$FILE" == *.tar.gz ]] && [ -f "$FILE" ] || { echo "Error: not a .tar.gz file: $FILE"; exit 1; }
+    echo "$FILE ($(numfmt --to=iec $(stat -c%s "$FILE"))) → $(pwd)"
+    if [ -f "$FILE.sha256" ]; then # verify checksum before extracting
+        echo "Verifying..."; EXP=$(cat "$FILE.sha256"); ACT=$(sha256sum "$FILE" | awk '{print $1}')
+        [ "$EXP" = "$ACT" ] && echo "Checksum OK" || { echo "CHECKSUM MISMATCH!"; exit 1; }
+    else echo "Warning: no .sha256 file, skipping verification"; fi
+    pv "$FILE" | pigz -d | tar xf - ;;
+*) echo "$USAGE"; exit 1 ;;
+esac
+echo "Done"
-- 
cgit