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Date:   Thu, 21 Mar 2019 16:25:09 -0400
From:   "Theodore Ts'o" <>
To:     Ext4 Developers List <>
        "Theodore Ts'o" <>
Subject: [PATCH 5/9] e2scrub: add the -n option which shows what commands e2scrub would execute

Also fix the copyright symbol so it is properly formatted when
processed into postscript or pdf.

Signed-off-by: Theodore Ts'o <>
 scrub/ | 11 ++++++++++-
 scrub/   |  6 ++++--
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/scrub/ b/scrub/
index ff03523e3..d0c8b2528 100644
--- a/scrub/
+++ b/scrub/
@@ -38,6 +38,15 @@ If the filesystem is not repaired,
 will be run before the next mount.
+Print what commands
+.B e2scrub
+would execute to check the file system.  (Note: the commands will not
+actually be executed; however, since
+.B e2scrub
+needs to run some commands to query the system to determine what
+commands would be executed, it still needs to be run as root.)
 Remove the e2scrub snapshot and exit without checking anything.
@@ -57,4 +66,4 @@ The exit codes are the same as in
 Darrick J. Wong <>
-Copyright ©2018 Oracle.  License is GPLv2+. <>
+Copyright \[co]2018 Oracle.  License is GPLv2+. <>
diff --git a/scrub/ b/scrub/
index 51a909373..301574968 100644
--- a/scrub/
+++ b/scrub/
@@ -37,6 +37,7 @@ print_help() {
 	echo "Usage: $0 [OPTIONS] mountpoint | device"
 	echo "mountpoint must be on a LVM-managed block device"
+	echo "-n: Show what commands e2scrub would execute."
 	echo "-r: Remove e2scrub snapshot and exit, do not check anything."
 	echo "-t: Run fstrim if successful."
 	echo "-V: Print version information and exit."
@@ -68,8 +69,9 @@ exitcode() {
 	exit "${ret}"
-while getopts "rtV" opt; do
-	case "${opt}" in
+while getopts "nrtV" opt; do
+    case "${opt}" in
+	"n") DBG="echo Would execute: " ;;
 	"r") reap=1;;
 	"t") fstrim=1;;
 	"V") print_version; exitcode 0;;

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