Linux

• Elasticsearch
• Delete Index
• allocate unassigned shards
• Truncate Corrupted Translog of Index
• FFMpeg
• add Timestamp to Video
• convert all files of type in directory
• Find video Codec of Video
• OpenSSH
• compile from source

Elasticsearch

Delete Index

curl -XDELETE localhost:9200/[index]?master_timeout=5m

allocate unassigned shards

range=2 IFS=$'\n' for line in $(curl -s 'localhost:9200/_cat/shards' | fgrep UNASSIGNED); do INDEX=$(echo $line | (awk '{print $1}')) SHARD=$(echo $line | (awk '{print $2}')) number=$RANDOM let "number %= ${range}" curl -H 'Content-Type:application/json' -XPOST http://localhost:9200/_cluster/reroute? -d '{ "commands" : [ { "allocate_empty_primary" : { "index" : '\"${INDEX}\"', "shard" : '\"${SHARD}\"', "node" : "tigger-1", "accept_data_loss" : true } } ] }' done

Truncate Corrupted Translog of Index

/usr/share/elasticsearch/bin/elasticsearch-shard remove-corrupted-data --index graylog_9 --shard-id 0

You should run the following command to allocate this shard:

curl -XPOST --header 'Content-Type: application/json' http://localhost:9200/_cluster/reroute -d ' { "commands" : [ { "allocate_stale_primary" : { "index" : "graylog_9", "shard" : 0, "node" : "zYNG7nZMRWCNCDlqsDhKkw", "accept_data_loss" : true } } ] }'

FFMpeg

add Timestamp to Video

ffmpeg -i <video_in>.mp4 \ 
	-vf  "drawtext = fontfile=/usr/share/fonts/truetype/dejavu/DejaVuSerif.ttf: text = '%{pts:gmtime:0:%M\\\\:%S}':\x=80: y=125: fontsize=48: fontcolor=white@1.0: box=1: boxcolor=black@1.0" \
    	<video_out>.mp4

convert all files of type in directory

for i in *.ts; do ffmpeg -i "${i}" -c:v libx264 -c:a copy -c:s mov_text "${i%%.*}.mp4"; done

Find video Codec of Video

ffprobe -select_streams v0 -show_entries "format:stream" \
  -of json -v quiet \
  -i ./path/to/videofile.extension \
  | grep -w "format_name" | cut -d "\"" -f4

mpegts

OpenSSH

compile from source

./configure --exec-prefix=/usr/ --bindir=/bin/ --sbindir=/sbin/ --prefix=/ --datarootdir=/usr/share/ --with-pam --with-privsep-user=nobody --with-md5-passwords