Elsa CHOI

Elsa CHOI

Bash Code

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Bash Code

show update time

  • stat -c "%y %n":%y get the seconds since epoch
date -r gen_sms.py +"%Y-%m-%d %H:%M"
# or 
stat -c "%y %n" /datacenter/swfdata/sms/* >& $workdir/fileLoc2txt/sms.txt

Post doc via http

cat msg.xml | curl -X POST -H 'Content-type: text/xml' -d @- http://smsmgr01.three.com.mo/servlet/_xml
curl -X POST -H 'Content-type: text/xml' -d @msg.xml http://smsmgr01.three.com.mo/servlet/_xml

show job and kill job

ps -xu | grep check_alert_direct.py
kill PID
# kill by name
pkill -f /home/cptmain/elsa/gen_sms/check_alert_direct.py

Create a file and change pression of rw

  • usually when generate a file by webpage need the following code
    touch myfile
chmod 777 myfile

ssh technique

  1. copy the new key to your server: ref: link
    ssh-keygen
ssh-copy-id user@host
ssh user@host
  2. copy file ref: link
    # local to remote
scp -P 2222 file.ext username@domain:~/ 
# remote to local
scp username@domain:/home/xxx/xxx/11.jpeg /Users/username/Desktop/
  3. show remote disk
    ssh ecmfuser@172.16.2.149 df -h /pub >& $workdir/fileLoc2txt/ecmwf.txt

zip folder

tar -czvf archive.tar.gz /usr/local/something
zip -r cam4_2022_12_28.zip cam4_2022_12_28

unzip folder

tar -xzvf archive.tar.gz -C /tmp
unzip cam4_2022_12_28.zip

regex

find /diskStation5/backupData/dailyBackup/2022-01/20220101/cam/4/ -regex "/diskStation5/backupData/dailyBackup/2022-01/20220101/cam/4/video_.*_[0-9][0-9]\(00\|15\|30\|45\)00\.jpg" -exec cp "{}" /home/cptmain/elsa/weatherCamBackup/ \

Mount nas

  • install nfs-utils (ref)
sudo yum -y install nfs-utils
  • make a folder
sudo mkdir /datacenter
  • vi /etc/fstab (ref)
nfs001.smg.net:/DC              /datacenter             nfs     suid,exec,dev,rw,async        0 0
nfs001.smg.net:/DC2      /datacenter2     nfs     suid,exec,dev,rw,async 0 0
172.16.5.172:/volume2/data   /diskStation3       nfs     suid,exec,dev,rw,async 0 0
  • mount all
sudo mount -a

loop file

shopt -s dotglob nullglob
a=(/datacenter/data/hko_warn.d/*)
num_file=${#a[@]}
if [ $num_file -gt 0 ]
then
# do someting
fi

date

if [ $# -eq 0 ]
then
  df=(`date +"%Y %m %d %H 00" --date="-3 days" `)
else
  df=($1 $2 $3 $4 $5)
fi
yyyy=${df[0]}
mm=${df[1]}
dd=${df[2]}
hh=${df[3]}
MM=${df[4]}
sched_time="${yyyy}${mm}${dd}"

vim set utf-8

:e! ++enc=utf8

vim delete all lines

gg
dG
# or
:1,$d

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