Category Archives: Shell Script

Delete snapshots older than 7 days

Posted on 2023 年 11 月 16 日 by cowman.chiang

To avoid running out of disk space in our test environment, we developed a plan to regularly execute shell scripts to clean up unnecessary snapshots.

#!/bin/bash

week=`date --date='7 days ago' +'%Y%m%d'`
echo "list_snapshots" | /home/webuser/hbase-1.2.9/bin/hbase shell | grep "pattern " | \
while read CMD; do
    filename=($CMD)
#    echo $filename
    date=`echo $filename | awk -F "_" '{print $2}'`
#    echo  "${filename#*_}"
#    echo $date
#    echo ${date:0:8}
    if [ "${date:0:8}" -lt $week ]
    then
        echo "delete_snapshot '$filename'" | /home/webuser/hbase-1.2.9/bin/hbase shell
    fi
done

#!/bin/bash

week=`date --date='7 days ago' +'%Y%m%d'`

echo "list_snapshots" | /home/webuser/hbase-1.2.9/bin/hbase shell | grep "pattern " | \

while read CMD; do

filename=($CMD)

# echo $filename

date=`echo $filename | awk -F "_" '{print $2}'`

# echo "${filename#*_}"

# echo $date

# echo ${date:0:8}

if [ "${date:0:8}" -lt $week ]

then

echo "delete_snapshot '$filename'" | /home/webuser/hbase-1.2.9/bin/hbase shell

done

Posted in HBase, Shell Script | Comments Off

[Shelll Script] check tomcat status

Posted on 2018 年 07 月 04 日 by cowman.chiang

!/bin/bash tomcat7=$(ps -ef | grep tomcat | wc -l) echo ${#tomcat7} if [ ${#tomcat7} -gt 0 ]; then printf “tomcat is running\n” else printf “tomcat is not running\n” fi

Posted in Linux, Shell Script, Tomcat | Leave a comment

Redirect stdout to logFile in shell script

Posted on 2017 年 02 月 02 日 by cowman.chiang

exec > >(tee -i logfile.txt)

1	exec > >(tee -i logfile.txt)

source: stackoverflow: redirect COPY of stdout to log file from within bash script itself

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find unused files and delete them

Posted on 2017 年 01 月 16 日 by cowman.chiang

find /var/log/radius/radacct -type f -name “reply*” -mtime +60 -exec rm -rf {} \; -mtime N — more than N days without being edited -exec CMD {} \; — comands, {} means the files which be found.

Posted in Linux, Shell Script | Leave a comment

Parse JSON string via command line

Posted on 2015 年 06 月 30 日 by cowman.chiang

Ref.:How to parse JSON string via command line on Linux Ubuntu: apt-get install jq Mac: brew install jq

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Redir 每日記錄回報

Posted on 2014 年 11 月 16 日 by cowman.chiang

#!/bin/sh
/bin/cat /var/log/syslog* | grep -a "ubuntu redir" | grep "`date --date=yesterday +%b %e`" > /root/diary.log
/bin/zcat /var/log/syslog.*.gz | grep -a "ubuntu redir" | grep "`date --date=yesterday +%b %e`" >> /root/diary.log
if [ -s /root/diary.log ] ;
then
  /bin/cat /root/diary.log| mail -s "Redir Log -- `date --date=yesterday +%b %e`" user@mail.address
fi

#!/bin/sh

/bin/cat /var/log/syslog* | grep -a "ubuntu redir" | grep "`date --date=yesterday +%b %e`" > /root/diary.log

/bin/zcat /var/log/syslog.*.gz | grep -a "ubuntu redir" | grep "`date --date=yesterday +%b %e`" >> /root/diary.log

if [ -s /root/diary.log ] ;

then

/bin/cat /root/diary.log| mail -s "Redir Log -- `date --date=yesterday +%b %e`" user@mail.address

Posted in Linux, Shell Script | Leave a comment

Shell Script Dialog

Posted on 2014 年 10 月 22 日 by cowman.chiang

Dialog 預設設定通常在個人Home目錄下的檔案”.dialogrc” 可使用指令 “dialog –create-rc ~/.dialogrc” 產生因為預設底色是青色，結束後會有色塊殘留，所以建議將screen_color調整為黑色也可在 dialog 指令執行前先指定使用哪一個設定檔案進行dialog “export DIALOGRC=${path}/dialog.installer” 記得離開前把DIALOGRC清空就好下面是將常用的dialogrc寫成function

dialog_msgbox() {
  #$1 => msgbox的類別{no clear, clear, clear & exit}, $2 => 前視窗的文字說明, $3 => 顯示的資訊文字
  case $1 in
    0) 
      dialog --backtitle "${backtitle}" --title "$2" --msgbox "n${3}" 9 50;;
    1)
      dialog --backtitle "${backtitle}" --title "$2" --clear --msgbox "n${3}" 9 50;;
    2)
      dialog --backtitle "${backtitle}" --title "$2" --clear --msgbox "n${3}" 9 50
      export DIALOGRC=
      exit 1;;
  esac
}

dialog_infobox() {
  #$1 => 前視窗的文字說明, $2 => 顯示的資訊文字
  dialog --backtitle "${backtitle}" --title "${1}" --infobox "${2}" 5 50
  sleep 1
}

dialog_inputbox() {
  #$1 => 前視窗的文字說明, $2 => 顯示的資訊文字, $3 => 預設值
  exec 3>&1
  inputtext=$(dialog --backtitle "${backtitle}" --title "${1}" --inputbox "${2}" 10 60 ${3} 2>&1 1>&3)
  exec 3>&-
}

dialog_yesno() {
  #$1 => 前視窗的文字說明, $2 => 顯示的資訊文字
  dialog --backtitle "${backtitle}" --title "${1}" --yesno "${2}" 7 60
  return $?
}

dialog_passwdbox() {
  #$1 => 前視窗的文字說明, $2 => 顯示的資訊文字
  exec 3>&1
  inputtext=$(dialog --backtitle "${backtitle}" --title "${1}" --insecure --clear --passwordbox "${2}" 10 60 2>&1 1>&3)
  exec 3>&-
}

dialog_msgbox() {

#$1 => msgbox的類別{no clear, clear, clear & exit}, $2 => 前視窗的文字說明, $3 => 顯示的資訊文字

case $1 in

dialog --backtitle "${backtitle}" --title "$2" --msgbox "n${3}" 9 50;;

dialog --backtitle "${backtitle}" --title "$2" --clear --msgbox "n${3}" 9 50;;

dialog --backtitle "${backtitle}" --title "$2" --clear --msgbox "n${3}" 9 50

export DIALOGRC=

exit 1;;

esac

}

dialog_infobox() {

#$1 => 前視窗的文字說明, $2 => 顯示的資訊文字

dialog --backtitle "${backtitle}" --title "${1}" --infobox "${2}" 5 50

sleep 1

}

dialog_inputbox() {

#$1 => 前視窗的文字說明, $2 => 顯示的資訊文字, $3 => 預設值

exec 3>&1

inputtext=$(dialog --backtitle "${backtitle}" --title "${1}" --inputbox "${2}" 10 60 ${3} 2>&1 1>&3)

exec 3>&-

}

dialog_yesno() {

#$1 => 前視窗的文字說明, $2 => 顯示的資訊文字

dialog --backtitle "${backtitle}" --title "${1}" --yesno "${2}" 7 60

return $?

}

dialog_passwdbox() {

#$1 => 前視窗的文字說明, $2 => 顯示的資訊文字

exec 3>&1

inputtext=$(dialog --backtitle "${backtitle}" --title "${1}" --insecure --clear --passwordbox "${2}" 10 60 2>&1 1>&3)

exec 3>&-

}

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Shell Script 計算字元

Posted on 2014 年 10 月 14 日 by cowman.chiang

cowman@ubuntu:~$ string=”0123 56 89″; echo “length: ${#strstring ing}” length: 10

Posted in Linux, Shell Script | Leave a comment

Category Archives: Shell Script

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