【Linux】history コマンド
公開日時:2020年01月07日 / 最終更新日時:2020年01月07日
history コマンドについて解説します。
history コマンドで過去のコマンド履歴を確認することができます。
設定の確認
■現在の histroy の履歴数の確認
[root@DESKTOP-KSVJFCR ~]# echo $HISTSIZE ← history コマンドで表示される数
1000
[root@DESKTOP-KSVJFCR ~]# echo $HISTFILESIZE ← .bash_history ファイルで表示される数
1000
[root@DESKTOP-KSVJFCR ~]#
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■history の履歴を保存するファイル
[root@DESKTOP-KSVJFCR ~]# ls -la
total 20
dr-xr-x--- 1 root root 512 Jan 7 17:20 .
drwxr-xr-x 1 root root 512 Jan 7 17:03 ..
-rw------- 1 root root 6921 Aug 8 21:48 anaconda-ks.cfg
drwxr-xr-x 1 root root 512 Jan 7 17:20 .aws
-rw------- 1 root root 1787 Oct 22 20:28 .bash_history
-rw-r--r-- 1 root root 18 Dec 29 2013 .bash_logout
-rw-r--r-- 1 root root 176 Dec 29 2013 .bash_profile
-rw-r--r-- 1 root root 240 Oct 22 20:13 .bashrc
drwxr-xr-x 1 root root 512 Jan 7 17:12 .cache
-rw-r--r-- 1 root root 100 Dec 29 2013 .cshrc
-rw------- 1 root root 6577 Aug 8 21:48 original-ks.cfg
drwxr----- 1 root root 512 Oct 22 19:52 .pki
-rw-r--r-- 1 root root 129 Dec 29 2013 .tcshrc
[root@DESKTOP-KSVJFCR ~]#
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■.bash_history の中身
[root@DESKTOP-KSVJFCR ~]# cat .bash_history
ls
cd mnt
ls
df -h
fdisk -l
yum update
ping www.baidu.com
ps -ef
ps
make
ifconfig
cd /
ls
cd proc/
ls
cd ..
ls
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コマンド実行日時の追加及び HISTFILESIZE の設定
■/etc/profile ファイルの編集
[root@DESKTOP-KSVJFCR ~]# vi /etc/profile
# /etc/profile
# System wide environment and startup programs, for login setup
# Functions and aliases go in /etc/bashrc
# It's NOT a good idea to change this file unless you know what you
# are doing. It's much better to create a custom.sh shell script in
# /etc/profile.d/ to make custom changes to your environment, as this
# will prevent the need for merging in future updates.
pathmunge () {
case ":${PATH}:" in
*:"$1":*)
;;
*)
if [ "$2" = "after" ] ; then
PATH=$PATH:$1
else
PATH=$1:$PATH
fi
esac
}
if [ -x /usr/bin/id ]; then
if [ -z "$EUID" ]; then
# ksh workaround
EUID=`/usr/bin/id -u`
UID=`/usr/bin/id -ru`
fi
USER="`/usr/bin/id -un`"
LOGNAME=$USER
MAIL="/var/spool/mail/$USER"
fi
# Path manipulation
if [ "$EUID" = "0" ]; then
pathmunge /usr/sbin
pathmunge /usr/local/sbin
else
pathmunge /usr/local/sbin after
pathmunge /usr/sbin after
fi
HOSTNAME=`/usr/bin/hostname 2>/dev/null`
#HISTSIZE=1000 ← デフォルトでは 1000 行。HISTFILESIZE の設定はありません。
HISTSIZE=10000
HISTFILESIZE=10000
HISTTIMEFORMAT='%Y/%m/%d %H:%M:%S ' ← 最後に半角スペースを入れます。
if [ "$HISTCONTROL" = "ignorespace" ] ; then
export HISTCONTROL=ignoreboth
else
export HISTCONTROL=ignoredups
fi
export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE HISTCONTROL
# By default, we want umask to get set. This sets it for login shell
# Current threshold for system reserved uid/gids is 200
# You could check uidgid reservation validity in
# /usr/share/doc/setup-*/uidgid file
if [ $UID -gt 199 ] && [ "`/usr/bin/id -gn`" = "`/usr/bin/id -un`" ]; then
umask 002
else
umask 022
fi
for i in /etc/profile.d/*.sh /etc/profile.d/sh.local ; do
if [ -r "$i" ]; then
if [ "${-#*i}" != "$-" ]; then
. "$i"
else
. "$i" >/dev/null
fi
fi
done
unset i
unset -f pathmunge
[root@DESKTOP-KSVJFCR ~]#
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■設定を反映
[root@DESKTOP-KSVJFCR ~]# source /etc/profile
[root@DESKTOP-KSVJFCR ~]#
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■結果を確認
[root@DESKTOP-KSVJFCR ~]# history
~ 省略 ~
169 2020/01/07 18:21:06 aws ec2 describe-security-groups --filters "Name=group-name,Values=Test-EC2-Instance-001-sg"
170 2020/01/07 18:21:06 aws ec2 describe-security-groups --filters "Name=group-name,Values=Test-EC2-Instance-001-sg"
171 2020/01/07 18:21:06 aws ec2 describe-security-groups --filters "Name=group-name,Values=Test-EC2-Instance-001-sg" --table
172 2020/01/07 18:21:06 aws ec2 describe-security-groups --filters "Name=group-name,Values=Test-EC2-Instance-001-sg" --output table
173 2020/01/07 18:21:06 history
174 2020/01/07 18:21:06 echo $HISTFILESIZE
175 2020/01/07 18:21:06 echo $HISTSIZE
176 2020/01/07 18:21:06 ls -la
177 2020/01/07 18:21:06 cat .bash_history
178 2020/01/07 18:21:06 exit
179 2020/01/07 18:21:12 ls -lah
180 2020/01/07 18:21:22 cat .bash_history
181 2020/01/07 18:26:34 cat /etc/profile
182 2020/01/07 18:28:35 vi /etc/profile
183 2020/01/07 18:29:27 cat /etc/profile
184 2020/01/07 18:29:31 df -h
185 2020/01/07 18:32:10 ls -la
186 2020/01/07 18:32:16 cat .bash_profile
187 2020/01/07 18:32:26 cat .bashrc
188 2020/01/07 18:41:50 vi /etc/profile
189 2020/01/07 18:43:52 source /etc/profile
190 2020/01/07 18:44:10 history
191 2020/01/07 18:45:03 vi /etc/profile
192 2020/01/07 18:45:15 source /etc/profile
193 2020/01/07 18:45:20 history
194 2020/01/07 18:47:24 vi /etc/profile
195 2020/01/07 18:47:45 source /etc/profile
196 2020/01/07 18:47:48 history
[root@DESKTOP-KSVJFCR ~]#
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