From 616d0be491dc15a41b09ec870287a9747cc2e7ee Mon Sep 17 00:00:00 2001
From: Jan Pokorný <jpokorny@redhat.com>
Date: Mon, 26 Aug 2013 20:54:17 +0200
Subject: Add bash history rotation on montly basis
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Credit:
http://lukas.zapletalovi.com/2013/03/never-lost-your-bash-history-again.html

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
---
 .local/bin/history-backup | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 .local/bin/history-backup

(limited to '.local')

diff --git a/.local/bin/history-backup b/.local/bin/history-backup
new file mode 100644
index 0000000..b591e12
--- /dev/null
+++ b/.local/bin/history-backup
@@ -0,0 +1,32 @@
+#!/bin/sh
+# [Source:
+#  http://lukas.zapletalovi.com/2013/03/never-lost-your-bash-history-again.html]
+#
+# This script creates monthly backups of the bash history file. Make sure you have
+# HISTSIZE set to large number (more than number of commands you can type in every
+# month). It keeps last 200 commands when it "rotates" history file every month.
+# Typical usage in a bash profile:
+#
+# HISTSIZE=90000
+# source ~/bin/history-backup
+#
+# And to search whole history use:
+# grep xyz -h --color ~/.bash_history.*
+#
+
+KEEP=200
+BASH_HIST=~/.bash_history
+BACKUP=$BASH_HIST.$(date +%y%m)
+
+if [ -s "$BASH_HIST" -a "$BASH_HIST" -nt "$BACKUP" ]; then
+  # history file is newer then backup
+  if [[ -f $BACKUP ]]; then
+    # there is already a backup
+    cp -f $BASH_HIST $BACKUP
+  else
+    # create new backup, leave last few commands and reinitialize
+    mv -f $BASH_HIST $BACKUP
+    tail -n$KEEP $BACKUP > $BASH_HIST
+    history -r
+  fi
+fi
-- 
cgit