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Latest 100 public snipts » bash

showing 1-20 of 578 snipts for bash

∞ Adds the current script's directory to PATH

# You cannot use readlink -f here, because OSX doesn't support it. There are 
# other solutions, but they're shell dependent. 
# See http://mywiki.wooledge.org/BashFAQ/028


HOME=`python -c 'import os,sys;print os.path.realpath(sys.argv[1])' $0`
HOME=`dirname $HOME`
PATH=$HOME:$PATH

bash

# You cannot use readlink -f here, because OSX doesn't support it. There are 
# other solutions, but they're shell dependent. 
# See http://mywiki.wooledge.org/BashFAQ/028


HOME=`python -c 'import os,sys;print os.path.realpath(sys.argv[1])' $0`
HOME=`dirname $HOME`
PATH=$HOME:$PATH

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bash,
dirty hack

posted by nikoschwarz on Aug 25, 2010 at 4:31 p.m. EDT

∞ Apache memory usage

ps -u www-data -o pid,rss,command | awk '{print $0}{sum+=$2} END {print "Total", sum}'

bash

ps -u www-data -o pid,rss,command | awk '{print $0}{sum+=$2} END {print "Total", sum}'

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apache,
bash

posted by jonbiddle on Aug 24, 2010 at 11:36 a.m. EDT

∞ Linux Wifi Connect Bash Script

#!/bin/bash

#INTERFACES=~/tmp/interfaces
INTERFACES=/etc/network/interfaces

#
# removing possible previous temp file
#
rm list.temp 2>/dev/null

#
# scans for wifi connections & isolates wifi AP name
#
eval list=( $(sudo iwlist scan 2>/dev/null | awk -F":" '/ESSID/{print $2}') )

#
# sets prompt
#
PS3="Choose wifi connection: "

#
# tests for number of wifi connections, exits if none
#
if [ -z "${list[0]}" ]; then
	clear
	echo "No available wifi connection"
	exit 1
fi

#
# menu of wifi connections
#
select item in "${list[@]}"; do

	#
	# sets essid as value for WIFI variable and displays information about the AP
	#
	wifi=$(echo $item)
        sudo iwlist scan 2>/dev/null | sed -n "/$wifi/, +9p" > list.temp
	echo "$(cat list.temp | sed 's/^[ \t]*//')"

	#
	# sets channel as value for CHANNEL variable
	#
	channel=$(grep Channel list.temp | sed 's/.*Channel//g')
	channel=$(echo $channel | sed 's/)//g')

	#
	# test for mode, if mode = master, sets MODE variable to managed
	#
	mode=$(grep Mode list.temp | sed 's/.*Mode://g')
	if [ "$mode" == "Master" ]; then
		mode="managed"
	else
		clear
		echo "Unsupported mode."
		exit
	fi

	#
	# tests for encryption key
	#
	key=$(grep key: list.temp | sed 's/.*key://g')
	if [ $key == "on" ]; then
		echo -n "Enter encryption key: "
		read key
	fi
        echo $key
        key=$(wpa_passphrase $wifi $key)
        echo $key
        key=$(echo $key | sed 's/.*psk=//g')
        echo $key
        key=$(echo $key | sed 's/ }//g')
        echo $key

	#
	# checks encryption algorithm
	#
        IE=$(grep IE: list.temp | sed 's/.*IE: //g')
        echo $IE

	#
	# backup interfaces file by date
	#
        echo "Reconfiguring interfaces and restarting network..."
	sudo cp $INTERFACES $INTERFACES.backup.$(date | sed 's/ /_/g')

        #
        # delete all wpa settings
        #
        sudo sed -i '/wpa-/d' $INTERFACES

	if [ "$IE" == "WPA Version 1" ]; then
                #
                # add new wpa-settings with encryption
                #
		sudo sed -i -e "/dhcp/a\wpa-passphrase $key" \
	                    -e "/dhcp/a\wpa-driver wext" \
	                    -e "/dhcp/a\wpa-key-mgmt WPA-PSK" \
	                    -e "/dhcp/a\wpa-proto WPA" \
	                    -e "/dhcp/a\wpa-ssid \"$wifi\"" $INTERFACES

	        
	else
                #
                # no encryption key, probably in coffee shop
                # sets the wireless configuration for non WPA: essid, channel and mode
		#
		echo "------------------------------------------------"
		echo "Connecting to: $wifi at channel: $channel, mode: $mode"
		echo "------------------------------------------------"
		sudo iwconfig eth1 essid \""$wifi"\" channel $channel mode $mode
	fi
        sudo /etc/init.d/networking restart
        exit
done

bash

#!/bin/bash

#INTERFACES=~/tmp/interfaces
INTERFACES=/etc/network/interfaces

#
# removing possible previous temp file
#
rm list.temp 2>/dev/null

#
# scans for wifi connections & isolates wifi AP name
#
eval list=( $(sudo iwlist scan 2>/dev/null | awk -F":" '/ESSID/{print $2}') )

#
# sets prompt
#
PS3="Choose wifi connection: "

#
# tests for number of wifi connections, exits if none
#
if [ -z "${list[0]}" ]; then
	clear
	echo "No available wifi connection"
	exit 1
fi

#
# menu of wifi connections
#
select item in "${list[@]}"; do

	#
	# sets essid as value for WIFI variable and displays information about the AP
	#
	wifi=$(echo $item)
        sudo iwlist scan 2>/dev/null | sed -n "/$wifi/, +9p" > list.temp
	echo "$(cat list.temp | sed 's/^[ \t]*//')"

	#
	# sets channel as value for CHANNEL variable
	#
	channel=$(grep Channel list.temp | sed 's/.*Channel//g')
	channel=$(echo $channel | sed 's/)//g')

	#
	# test for mode, if mode = master, sets MODE variable to managed
	#
	mode=$(grep Mode list.temp | sed 's/.*Mode://g')
	if [ "$mode" == "Master" ]; then
		mode="managed"
	else
		clear
		echo "Unsupported mode."
		exit
	fi

	#
	# tests for encryption key
	#
	key=$(grep key: list.temp | sed 's/.*key://g')
	if [ $key == "on" ]; then
		echo -n "Enter encryption key: "
		read key
	fi
        echo $key
        key=$(wpa_passphrase $wifi $key)
        echo $key
        key=$(echo $key | sed 's/.*psk=//g')
        echo $key
        key=$(echo $key | sed 's/ }//g')
        echo $key

	#
	# checks encryption algorithm
	#
        IE=$(grep IE: list.temp | sed 's/.*IE: //g')
        echo $IE

	#
	# backup interfaces file by date
	#
        echo "Reconfiguring interfaces and restarting network..."
	sudo cp $INTERFACES $INTERFACES.backup.$(date | sed 's/ /_/g')

        #
        # delete all wpa settings
        #
        sudo sed -i '/wpa-/d' $INTERFACES

	if [ "$IE" == "WPA Version 1" ]; then
                #
                # add new wpa-settings with encryption
                #
		sudo sed -i -e "/dhcp/a\wpa-passphrase $key" \
	                    -e "/dhcp/a\wpa-driver wext" \
	                    -e "/dhcp/a\wpa-key-mgmt WPA-PSK" \
	                    -e "/dhcp/a\wpa-proto WPA" \
	                    -e "/dhcp/a\wpa-ssid \"$wifi\"" $INTERFACES

	        
	else
                #
                # no encryption key, probably in coffee shop
                # sets the wireless configuration for non WPA: essid, channel and mode
		#
		echo "------------------------------------------------"
		echo "Connecting to: $wifi at channel: $channel, mode: $mode"
		echo "------------------------------------------------"
		sudo iwconfig eth1 essid \""$wifi"\" channel $channel mode $mode
	fi
        sudo /etc/init.d/networking restart
        exit
done

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posted by jakes on Aug 21, 2010 at 8:02 p.m. EDT

∞ Find and remove files older than a certain date
```
find /path/to/dir -type f -mtime +30 -exec rm {} \;
```
```
bash
```
1

Find and remove files older than a certain date
```
find /path/to/dir -type f -mtime +30 -exec rm {} \;
```
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0 comments - tagged in
- bash,
- filesystem,
- storage
posted by shacker on Aug 18, 2010 at 3:08 p.m. EDT
∞ reads a dump of file, formatted as C source
```
xxd -i `which xxd`
```
```
bash
```
1

reads a dump of file, formatted as C source
```
xxd -i `which xxd`
```
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0 comments - tagged in
- bash,
- vim
posted by phlee on Aug 11, 2010 at 8:59 p.m. EDT

∞ free binaural beats

# A little snippet to download a bunch of free binaural beats
# to your hard drive.

cd ~/Downloads && curl -O http://mayhem-chaos.net/stuff/xspf-download-0.1.0.py && chmod 755 xspf-download-0.1.0.py && ./xspf-download-0.1.0.py http://healingbeats.com/beats.xspf &

# After the downloads finish, simply 
#  1) open Finder
#  2) Navigate to Downloads folder,
#  3) Drag the folder 'beats' over the itunes icon in your Dock.
#  4) delete the xspf-download-0.1.0.py file from Downloads folder.

bash

# A little snippet to download a bunch of free binaural beats
# to your hard drive.

cd ~/Downloads && curl -O http://mayhem-chaos.net/stuff/xspf-download-0.1.0.py && chmod 755 xspf-download-0.1.0.py && ./xspf-download-0.1.0.py http://healingbeats.com/beats.xspf &

# After the downloads finish, simply 
#  1) open Finder
#  2) Navigate to Downloads folder,
#  3) Drag the folder 'beats' over the itunes icon in your Dock.
#  4) delete the xspf-download-0.1.0.py file from Downloads folder.

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posted by jrguitar21 on Aug 11, 2010 at 6:46 p.m. EDT

∞ svn ignore passwords

# on production servers its often a good idea not to store svn passwords.
# heres a one-liner to do just that:
echo "store-passwords=no" >> ~/.subversion/servers && rm -f ~/.subversion/auth/svn.simple/*

bash

# on production servers its often a good idea not to store svn passwords.
# heres a one-liner to do just that:
echo "store-passwords=no" >> ~/.subversion/servers && rm -f ~/.subversion/auth/svn.simple/*

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posted by jrguitar21 on Aug 11, 2010 at 6:14 p.m. EDT

∞ bash

su -c 'cd /etc/yum.repos.d/ && wget baseroot.info/piotrek.repo'

bash

su -c 'cd /etc/yum.repos.d/ && wget baseroot.info/piotrek.repo'

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bash

posted by piotrek23 on Aug 05, 2010 at 8:52 a.m. EDT

∞ Change ownership of a file
```
chown -R wwwrun:www
```
```
bash
```
1

Change ownership of a file
```
chown -R wwwrun:www
```
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0 comments - tagged in
- bash,
- chmod,
- chown,
- unix
posted by pazzypunk on Aug 04, 2010 at 2:32 p.m. EDT
∞ copy key and crt
```
$ cat host.key host.crt > host.pem
```
```
bash
```
1

copy key and crt
```
$ cat host.key host.crt > host.pem
```
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0 comments - tagged in
- bash
posted by donie on Aug 02, 2010 at 2:21 a.m. EDT
∞ mercurial tip
```
[extensions]
hgext.progress =
```
```
bash
```
1

mercurial tip
```
[extensions]
hgext.progress =
```
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0 comments - tagged in
- bash,
- linux,
- mercurial
posted by piotrek23 on Aug 01, 2010 at 12:17 p.m. EDT

∞ MySQL global search & replace

mysql -u user -ppassword -e "SELECT CONCAT('UPDATE ',table_schema,'.',table_name, ' SET ',column_name, '=REPLACE(',column_name,',''old_string'',''new_string'');') FROM information_schema.columns WHERE table_schema = 'database_name'" | sed '1d' | mysql -u user -ppassword database_name

sql

mysql -u user -ppassword -e "SELECT CONCAT('UPDATE ',table_schema,'.',table_name, ' SET ',column_name, '=REPLACE(',column_name,',''old_string'',''new_string'');') FROM information_schema.columns WHERE table_schema = 'database_name'" | sed '1d' | mysql -u user -ppassword database_name

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posted by Andrei on Jul 31, 2010 at 1:13 p.m. EDT

∞ sequence of jpegs into one pdf document

for i in *; do jpegtopnm $i > $i.pnm;done
for i in *.pnm;do pnmtops $i > $i.ps;done
for i in *.ps;do ps2pdf $i $i.pdf;done
gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=contract.pdf -dBATCH contract002.jpg.pnm.ps.pdf contract002-1.jpg.pnm.ps.pdf contract002-2.jpg.pnm.ps.pdf contract002-3.jpg.pnm.ps.pdf contract002-4.jpg.pnm.ps.pdf

bash

for i in *; do jpegtopnm $i > $i.pnm;done
for i in *.pnm;do pnmtops $i > $i.ps;done
for i in *.ps;do ps2pdf $i $i.pdf;done
gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=contract.pdf -dBATCH contract002.jpg.pnm.ps.pdf contract002-1.jpg.pnm.ps.pdf contract002-2.jpg.pnm.ps.pdf contract002-3.jpg.pnm.ps.pdf contract002-4.jpg.pnm.ps.pdf

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posted by marcell on Jul 29, 2010 at 4:24 p.m. EDT

∞ Using SNMP to Collect DataFort Throughput

# Make sure all the MIB Files are copied to the /usr/share/snmp/mibs/
# And confirm that Net-SNMP finds the new modules 
# ./snmptranslate -m +DECRU-BASE-MIB -IR -On dcrSysTrafficMeter

# Throughput Table
./snmptable -v 1 -c netapp -m +DECRU-BASE-MIB 10.72.235.61 dcrSysTrafficMeterTable

# Current IOPS
./snmpwalk -v 1 -c netapp -m +DECRU-BASE-MIB 10.72.235.61 dcrSysTrafficMeter.opsPerSec

# Peak IOPS
./snmpwalk -v 1 -c netapp -m +DECRU-BASE-MIB 10.72.235.61 dcrSysTrafficMeterPeak.opsPerSec

bash

# Make sure all the MIB Files are copied to the /usr/share/snmp/mibs/
# And confirm that Net-SNMP finds the new modules 
# ./snmptranslate -m +DECRU-BASE-MIB -IR -On dcrSysTrafficMeter

# Throughput Table
./snmptable -v 1 -c netapp -m +DECRU-BASE-MIB 10.72.235.61 dcrSysTrafficMeterTable

# Current IOPS
./snmpwalk -v 1 -c netapp -m +DECRU-BASE-MIB 10.72.235.61 dcrSysTrafficMeter.opsPerSec

# Peak IOPS
./snmpwalk -v 1 -c netapp -m +DECRU-BASE-MIB 10.72.235.61 dcrSysTrafficMeterPeak.opsPerSec

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posted by winker on Jul 29, 2010 at 7:00 a.m. EDT

∞ Find/replace on specific and all domain level

Single domain:

domainName=DOMAIN.COM; outFile=JSOUT`date +%s`; cd ~/domains/$domainName; curFile=`pwd | sed "s~.*\(/domains/.*\)~\1/~"`; for x in `find . -type f -perm -u+r -name "*.js" -o -name "*.min" -o -name "*.min.js" -o -name "*.html" | egrep -v JSBAK`; do if grep -q "var st1 = 0;document.write(unescape" $x; then echo $x >> $outFile; sed -i.JSBAK "s~var\ st1\ =\ 0;document\.write(unescape('[0-9A-Z%]*'));var\ gr0=0;~~" $x; fi; done; if [ -f $outFile ]; then sed "s~\.\(.*\)~$curFile\1~g" $outFile; echo ""; sed "s~\.\(.*\)~$curFile\1.JSBAK~g" $outFile; rm $outFile; else echo "No files found"; fi;

All domains:

outFile=JSOUT`date +%s`; cd ~/domains/; for x in `find . -type f -perm -u+r -name "*.js" -o -name "*.min" -o -name "*.min.js" -o -name "*.html" | egrep -v JSBAK`; do if grep -q "var st1 = 0;document.write(unescape" $x; then echo $x >> $outFile; sed -i.JSBAK "s~var\ st1\ =\ 0;document\.write(unescape('[0-9A-Z%]*'));var\ gr0=0;~~" $x; fi; done; if [ -f $outFile ]; then sed "s~\.\(.*\)~/domains\1~g" $outFile; echo ""; sed "s~\.\(.*\)~/domains\1.JSBAK~g" $outFile; rm $outFile; else echo "No files found"; fi;

bash

Single domain:

domainName=DOMAIN.COM; outFile=JSOUT`date +%s`; cd ~/domains/$domainName; curFile=`pwd | sed "s~.*\(/domains/.*\)~\1/~"`; for x in `find . -type f -perm -u+r -name "*.js" -o -name "*.min" -o -name "*.min.js" -o -name "*.html" | egrep -v JSBAK`; do if grep -q "var st1 = 0;document.write(unescape" $x; then echo $x >> $outFile; sed -i.JSBAK "s~var\ st1\ =\ 0;document\.write(unescape('[0-9A-Z%]*'));var\ gr0=0;~~" $x; fi; done; if [ -f $outFile ]; then sed "s~\.\(.*\)~$curFile\1~g" $outFile; echo ""; sed "s~\.\(.*\)~$curFile\1.JSBAK~g" $outFile; rm $outFile; else echo "No files found"; fi;

All domains:

outFile=JSOUT`date +%s`; cd ~/domains/; for x in `find . -type f -perm -u+r -name "*.js" -o -name "*.min" -o -name "*.min.js" -o -name "*.html" | egrep -v JSBAK`; do if grep -q "var st1 = 0;document.write(unescape" $x; then echo $x >> $outFile; sed -i.JSBAK "s~var\ st1\ =\ 0;document\.write(unescape('[0-9A-Z%]*'));var\ gr0=0;~~" $x; fi; done; if [ -f $outFile ]; then sed "s~\.\(.*\)~/domains\1~g" $outFile; echo ""; sed "s~\.\(.*\)~/domains\1.JSBAK~g" $outFile; rm $outFile; else echo "No files found"; fi;

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posted by malkir on Jul 28, 2010 at 10:30 p.m. EDT

∞ Untar bz2 to directory
```
tar -jxvf archive_name.tar.bz2 -C /directory/
```
```
bash
```
1

Untar bz2 to directory
```
tar -jxvf archive_name.tar.bz2 -C /directory/
```
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0 comments - tagged in
- bash
posted by turnbullm on Jul 26, 2010 at 9:55 p.m. EDT
∞ Untar bz2
```
tar -jxvf archive_name.tar.bz2
```
```
bash
```
1

Untar bz2
```
tar -jxvf archive_name.tar.bz2
```
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0 comments - tagged in
- bash
posted by turnbullm on Jul 26, 2010 at 9:54 p.m. EDT
∞ Tar bz2 (good compression, slower)
```
tar -jcvf archive_name.tar.bz2 directory_to_compress
```
```
bash
```
1

Tar bz2 (good compression, slower)
```
tar -jcvf archive_name.tar.bz2 directory_to_compress
```
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0 comments - tagged in
- bash
posted by turnbullm on Jul 26, 2010 at 9:54 p.m. EDT
∞ Untar gz to directory
```
tar -zxvf archive_name.tar.gz -C /tmp/extract_here/
```
```
bash
```
1

Untar gz to directory
```
tar -zxvf archive_name.tar.gz -C /tmp/extract_here/
```
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0 comments - tagged in
- bash
posted by turnbullm on Jul 26, 2010 at 9:53 p.m. EDT
∞ Untar gz
```
tar -zxvf archive_name.tar.gz
```
```
bash
```
1

Untar gz
```
tar -zxvf archive_name.tar.gz
```
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0 comments - tagged in
- bash
posted by turnbullm on Jul 26, 2010 at 9:53 p.m. EDT

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Latest 100 public snipts » bash

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