Filter unique values from third column, separated by space

   1 cat datax.log |  awk -F ' ' '/IMEI/{print $3}' | sort | uniq | wc -l

Filter unique values from third column, separated by :

   1 cat datax.log |  awk -F ':' '/IMEI/{print $3}' | sort | uniq | wc -l

Search for text in files recursively

   1 cd startFolder
   2 grep -H "textToSearch" * -R

Copy files to other destination (Win32)

@echo off
REM Mount drive
echo Mounting remote drive
net use z: \\192.168.1.1\backs password /USER:userx

REM copy current day files
echo Copying current day files
forfiles -p "I:" -s -m *FULL*.sqb -d +0 -c "cmd /c copy @path Z:\BACKUPS\@file"

echo Deleting files older than 7 days
REM delete files older than 7 days
forfiles -p "Z:\BACKUPS" -m *.sqb -d 7 -c "cmd /c del @path"

Gzip files that where last modified in 30 or more days (Win32)

forfiles /p "c:\logs" /d -30 /m *.log /c "cmd /c gzip @path "

Run task every day at 01:00 (Win32)

at 01:00 /every:M,T,W,Th,F,S,Su c:\task.bat

Block responses to pings

   1 #block responses to pings
   2 iptables -A INPUT -p icmp -m icmp --icmp-type echo-request -j DROP
   3 iptables -L
   4 #restore responses to pings
   5 iptables -F
   6 iptables -L

Zip SVN modified Java files

   1 #!/bin/sh
   2 # chmod 755 /usr/local/bin/modifiedJavaSvn.sh # on CygWin
   3 svn status | awk '/.java/{ print( gensub( /\\/,"/","g",$2) ); }' | xargs -i zip modifiedJavaFiles.zip {}
   4 unzip -v modifiedJavaFiles.zip

Deploy EAR script

   1 #!/usr/bin/bash
   2 # deploy EAR in remote JBoss . 
   3 # Must have pub SSH keys (authorized_keys) deployed on remote server
   4 # Can be used with cygwin
   5 FILEX=sample.ear
   6 DEST_DIR=/opt/jboss/server/default/deploy/
   7 ECLIPSE_PROJECT=/home/userx/workspace/sample-ear/
   8 
   9 deploy()
  10 {
  11   SERVER=$1
  12   USER=$2
  13   echo "Deploying in $SERVER ..."
  14 
  15   cd $PROJECT
  16   scp target/$FILEX $USER@$SERVER:/tmp
  17   ssh $USER@$SERVER -C "mv /tmp/$FILEX $DEST_DIR/$FILEX"
  18   ssh $USER@$SERVER -C "ls -lah $DEST_DIR"
  19   ssh $USER@$SERVER -C "chmod 666  $DEST_DIR/$FILEX"
  20   ssh $USER@$SERVER -C "/sbin/service jboss abort"
  21   ssh $USER@$SERVER -C "sudo /sbin/service jboss start"
  22 }
  23 
  24 deploy "example-server" "userx"

List JAR contents to file

cd ~/.m2/repository
find . -name "*.jar" | xargs -i jar -tf {} > /tmp/explodedJars.txt
find . -name "*.jar" | xargs -i sh -c "echo {} ; jar -tf {}" > /tmp/explodedJars.txt

Size of each directory inside current directory

find . -maxdepth 1 -type d | xargs -i du {} -hs

Backup folders in HOME

   1 #!/bin/bash
   2 # cd ~
   3 # ln -s scripts/backup.sh backup.sh
   4 # sh backup.sh
   5 DATE=`date '+%Y%m%d%H%M%S'`
   6 FILENAME=~/backups/backup_$DATE.tar.gz
   7 cd ~
   8 mkdir -p ~/backups
   9 rm $FILENAME
  10 tar cvzf $FILENAME Documents GNUstep ThunderbirdMail Desktop .Skype scripts moin-1.9.7
  11 # tar tvzf backup_20150108103242.tar.gz
  12

Get installed updates on Windows

wmic qfe list brief /format:texttablewsys > updates.txt

Find files modified less than an hour ago

find . -mtime -1h -name "*.cfg"

Lock file to allow only one instance of a script to run

   1 #!/bin/sh
   2 LOCK_FILE=$(echo "/var/tmp/lockTest.lck")
   3 PID=$$
   4 LOCKED=0
   5 COUNT=0
   6 echo "Trying to get lock to $PID in $LOCK_FILE"
   7 
   8 while [ $LOCKED -eq "0" ] && [ $COUNT -le "3" ]; do
   9     if ( set -o noclobber; echo "$PID" > "$LOCK_FILE" ) 2> /dev/null; then
  10         LOCKED=1
  11     else        
  12         sleep 1
  13         COUNT=$(($COUNT+1))
  14         echo "Trying to get lock to $PID in $LOCK_FILE, retry $COUNT"
  15     fi    
  16 done
  17 
  18 if [ $LOCKED -eq "0" ]; then
  19     echo "Unable to get lock to $PID with $COUNT retries"
  20     exit 1
  21 else
  22     echo "Lock acquired to $PID"    
  23 fi   
  24 #####################################
  25 sleep 10
  26 #####################################
  27 rm -f "$LOCK_FILE"
  28 LOCKED=0
  29 echo "Released lock to $PID"
  30 exit 0

awk , load file into array

https://magvar.wordpress.com/2011/05/18/awking-it-how-to-load-a-file-into-an-array-in-awk/

   1 #! /bin/bash
   2 INPUTFILE="inputfile.csv"
   3 DATAFILE="data.csv"
   4 OUTFILE="output.csv"
   5 
   6 awk 'BEGIN {
   7 while (getline < "'"$INPUTFILE"'")
   8 {
   9 split($0,ft,",");
  10 id=ft[1];
  11 name=ft[2];
  12 
  13 key=id;
  14 data=name;
  15 nameArr[key]=data;
  16 }
  17 close("'"$INPUTFILE"'");
  18 
  19 while (getline < "'"$DATAFILE"'")
  20 {
  21 split($0,ft,",");
  22 id=ft[1]; # Id is the first column
  23 phone=ft[2]; # Phonenumber is the second
  24 name=nameArr[id]; # Get the name from the nameArr, using "id" as key
  25 print id","name","phone > "'"$OUTFILE"'"; # Print directly to the outputfile
  26 }
  27 }'

Shell script sample

   1 #!/bin/sh
   2 function replaceString {
   3   RES=$(echo $1 | sed "s/$2/$3/g")
   4   echo $RES
   5 }
   6 
   7 function add {
   8   echo $( echo "$1 + $2" | bc )    
   9 }
  10 
  11 function inc {
  12   echo $( expr $1 + 1 )  
  13 }
  14 ####################################
  15 echo $(add "1.5" "3.2" )
  16 
  17 TEXT1="AAA BBB CCC"
  18 
  19 for WORD in $TEXT1
  20 do
  21   echo ${WORD}
  22 done
  23 
  24 WITHOUTSPACES=$(replaceString "AAA BBB XXX" " " "" )
  25 echo $WITHOUTSPACES
  26 
  27 if [ $WITHOUTSPACES == "AAABBBXXX" ]
  28 then
  29   echo "Equal"
  30 fi
  31 
  32 if [ $WITHOUTSPACES != "AAA BBB XXX" ]
  33 then
  34   echo "Diff"
  35 fi
  36 
  37 A=$(ls / | wc -l)
  38 A=$(expr $A + 1)
  39 if [ $A -eq 22 ]
  40 then
  41   echo $A
  42 fi
  43 
  44 B="222"
  45 B=$(expr $B)
  46 if [ $B -eq 222 ]
  47 then
  48   echo $B
  49 fi
  50 
  51 COUNT="0"
  52 while [ $COUNT -lt 10 ]
  53 do
  54   COUNT=$( inc $COUNT )
  55 done
  56 
  57 $(test 0 -ge 0)
  58 RES=$(echo $?)
  59 echo $RES

Change TIME_WAIT (time wait) tcp/ip

Linux

echo 1 > /proc/sys/net/ipv4/tcp_fin_timeout
echo 1 > /proc/sys/net/ipv4/tcp_tw_recycle
echo 1 > /proc/sys/net/ipv4/tcp_tw_reuse

Freebsd

sysctl net.inet.tcp.msl=1500

Show root folders occupied space

   1 cd /tmp
   2 ls --color=never | xargs -i du {} -hs
   3 find . -type d -maxdepth 1 | xargs -i du {} -hs
   4 
   5 #~/.bashrc
   6 alias folderUsedSpace='find . -type d -maxdepth 1 | xargs -i du {} -hs'

Add swapfile 512MB

   1 df -h
   2 dd if=/dev/zero of=/swapfile1 bs=1024 count=524288
   3 chown root:root /swapfile1 
   4 chmod 0600 /swapfile1 
   5 mkswap /swapfile1 
   6 swapon /swapfile1
   7 free -m
   8 vi /etc/fstab
   9 # /swapfile1 none swap sw 0 0
  10 free -m
  11 htop

Alias current date

   1 alias currdate="date '+%Y%m%dT%H%M%S'"

Alias history without line number

   1 alias hist='history | cut -c 8-'

Calculator using bc

   1 #!/bin/sh
   2 echo "scale=3;$1" | bc

Get slackbuild

getslackbuild.sh

   1 #!/bin/sh
   2 PACKAGENAME=$1
   3 PAGE=/tmp/page.html
   4 HEADERS=/tmp/headers.html
   5 RES=/tmp/slackbuildres.txt
   6 curl https://slackbuilds.org/result/?search=$PACKAGENAME -D $HEADERS > $PAGE 2>/dev/null
   7 LOCATION=$(cat $HEADERS | grep -i Location | sed  's/Location: //g' )
   8 echo "Location: $LOCATION"
   9 POS=$(echo $LOCATION | grep -b -o "?search" | cut -d: -f1 )
  10 LOCATION_FIXED=$( echo $LOCATION | cut -c1-"$POS" | sed  "s/$PACKAGENAME\///g"   )
  11 INFO_FIXED=$( echo $LOCATION | cut -c1-"$POS"  )
  12 PACKAGE=$(echo $LOCATION_FIXED$1.tar.gz | sed 's/http:/https:/g' | sed  's/repository\//slackbuilds\//g')
  13 INFO=$(echo $INFO_FIXED$1.info | sed 's/http:/https:/g'  | sed  's/repository\//slackbuilds\//g'  )
  14 echo "Package: $PACKAGE"
  15 echo "Info: $INFO"
  16 cd /tmp
  17 rm -rf $PACKAGENAME/
  18 rm -f $PACKAGENAME.tar.gz*
  19 echo "Getting package"
  20 wget $PACKAGE
  21 tar xvzf $PACKAGENAME.tar.gz
  22 cd $PACKAGENAME
  23 echo "Getting info"
  24 wget $INFO
  25 DOWNLOAD=$(cat $PACKAGENAME.info | grep "DOWNLOAD=" | sed 's/"//g' | sed 's/DOWNLOAD=//g' )
  26 echo "Download source code"
  27 wget $DOWNLOAD
  28 echo "Run slackbuild"
  29 ./$PACKAGENAME.SlackBuild > $RES 2>&1
  30 SBO=$( cat $RES | grep "Slackware package " | grep " created" | sed 's/Slackware package //g' | sed 's/ created\.//g'  )
  31 echo "SlackBuild package: $SBO"

Prompt PS1 without current folder

   1 # prompt without current folder
   2 #PS1="$(date +'%Y-%m-%dT%H:%M:%S') $(whoami)@${HOST}\$ "
   3 #PS1="$(date +'%Y-%m-%dT%H:%M:%S') $(whoami)@$(hostname -a)\$ "
   4 PS1="\D{%Y-%m-%d}T\A \u@\H\r\n\$ "

Prompt PS1 with folder

   1 # PS1="$(date +'%Y-%m-%dT%H:%M:%S') $(whoami)@$(hostname -a)\n${PWD}\n\$ "
   2 PS1="\D{%Y-%m-%d}T\A \u@\H\n\w\r\n\$ "
   3 
   4 $PS1="$(date +'%Y-%m-%dT%H:%M:%S') [\u@\h:\l \w]\\n\\$"

PowerShell commands

Get-ChildItem c:\windows\system32\*.txt -Recurse | Select-String -Pattern "Microsoft" -CaseSensitive
sls "searchstring" file

Search using GNU grep

   1 #!/bin/sh
   2 echo "Searching $1 in $(pwd)"
   3 grep -H -n "$1" * -R

Navigation

Upload page content

Filter unique values from third column, separated by space

Filter unique values from third column, separated by :

Search for text in files recursively

Copy files to other destination (Win32)

Gzip files that where last modified in 30 or more days (Win32)

Run task every day at 01:00 (Win32)

Block responses to pings

Zip SVN modified Java files

Deploy EAR script

List JAR contents to file

Size of each directory inside current directory

Backup folders in HOME

Get installed updates on Windows

Find files modified less than an hour ago

Lock file to allow only one instance of a script to run

awk , load file into array

Shell script sample

Change TIME_WAIT (time wait) tcp/ip

Show root folders occupied space

Add swapfile 512MB

Alias current date

Alias history without line number

Calculator using bc

Get slackbuild

Prompt PS1 without current folder

Prompt PS1 with folder

PowerShell commands

Search using GNU grep