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Delete all lines after the first match
This is sample output - yours may be different.
0

sed -n -e '1,/match/p'

climatewarrior · 2009-06-03 16:33:43 6
Find chronological errors or bad timestamps in a Subversion repository

Lists revisions in a Subversion repository with a timestamp that doesn't follow the revision numbering order. If everything is OK, nothing is displayed.
This is sample output - yours may be different.
2

URL=http://svn.example.org/project; diff -u <(TZ=UTC svn -q log -r1:HEAD $URL | grep \|) <(TZ=UTC svn log -q $URL | grep \| | sort -k3 -t \|)

sunny256 · 2009-06-03 14:26:55 4
See smbstatus all the time

See smbstatus Output within a 5 second interval (for monitoring smb access)
This is sample output - yours may be different.
-4

while (( $i != 0 )) { smbstatus; sleep 5; clear }

unixmonkey4084 · 2009-06-03 13:26:30 9
Monitor logs in Linux using Tail

Works in Ubuntu, I hope it will work on all Linux machines. For Unixes, tail should be capable of handling more than one file with '-f' option. This command line simply take log files which are text files, and not ending with a number, and it will continuously monitor those files. Putting one alias in .profile will be more useful.
This is sample output - yours may be different.
6

find /var/log -type f -exec file {} \; | grep 'text' | cut -d' ' -f1 | sed -e's/:$//g' | grep -v '[0-9]$' | xargs tail -f

mohan43u · 2009-06-03 09:47:08 11
Show git branches by date - useful for showing active branches

Print out list of all branches with last commit date to the branch, including relative time since commit and color coding. Show Sample Output
This is sample output - yours may be different.
```
2009-06-03 12:21:35 +0900 3 hours ago	add_cool_functionality
2009-06-02 16:15:13 +0900 24 hours ago	remove_strange_bug
2009-06-02 16:12:20 +0900 24 hours ago	implement_observer
2009-06-02 14:42:58 +0900 25 hours ago	experiment_with_bobcat_feature
```
16

for k in `git branch|perl -pe s/^..//`;do echo -e `git show --pretty=format:"%Cgreen%ci %Cblue%cr%Creset" $k|head -n 1`\\t$k;done|sort -r

brunost · 2009-06-03 08:25:00 318
coloured tail

tail with coloured output with the help of perl - need more colours? here is a colour table: http://www.tuxify.de/?p=23 Show Sample Output
This is sample output - yours may be different.
```
well no colours here
```
17

tail -f FILE | perl -pe 's/KEYWORD/\e[1;31;43m$&\e[0m/g'

tuxifier · 2009-06-02 21:31:54 22
du disk top 10

fancy command line ncdu clone Show Sample Output
This is sample output - yours may be different.
```
67 MB used by /var/log
42 MB used by /var/log/gdm
9 MB used by /var/log/ConsoleKit
2 MB used by /var/log/munin
1 MB used by /var/log/kismet
1 MB used by /var/log/dist-upgrade
0 MB used by /var/log/apache2
0 MB used by /var/log/installer
0 MB used by /var/log/vmware
0 MB used by /var/log/cups
```
7

for i in `du --max-depth=1 $HOME | sort -n -r | awk '{print $1 ":" $2}'`; do size=`echo $i | awk -F: '{print $1}'`; dir=`echo $i | awk -F: '{print $NF}'`; size2=$(($size/1024)); echo "$size2 MB used by $dir"; done | head -n 10

tuxifier · 2009-06-02 21:27:48 8
Check version of DNS Server

Show Sample Output
This is sample output - yours may be different.
```
maggie:~ root# nslookup -q=txt -class=CHAOS version.bind NS.PHX5.NEARLYFREESPEECH.NET
Server:		NS.PHX5.NEARLYFREESPEECH.NET
Address:	208.94.116.129#53
version.bind	text = "9.3.4-P1"
```
0

nslookup -q=txt -class=CHAOS version.bind NS.PHX5.NEARLYFREESPEECH.NET

unixmonkey4063 · 2009-06-02 19:54:24 5
Archive every file in /var/logs
This is sample output - yours may be different.
0

find /var/logs -name * | xargs tar -jcpf logs_`date +%Y-%m-%e`.tar.bz2

unixmonkey4063 · 2009-06-02 19:48:47 6
Search for all files that begin with . and delete them.

Show Sample Output
This is sample output - yours may be different.
```
maggie:~ root# find ~/Desktop/ $ -regex '.*/\..*' $ -print -exec rm -Rf {} \;
~/Desktop/.DS_Store
~/Desktop/.fseventsd
```
-6

find ~/Desktop/ $ -regex '.*/\..*' $ -print -exec rm -Rf {} \;

unixmonkey4063 · 2009-06-02 19:45:06 8
Uncompress a CSS file

Ever compress a file for the web by replacing all newline characters with nothing so it makes one nice big blob? It is a great idea, however what about when you want to edit that file? ...Serious pain in the butt. I ran into this today in that my only copy of a CSS file was "compressed" with no newlines. I whipped this up and it converted back into nice human readable CSS :-) It could be nicer, but it does the job.
This is sample output - yours may be different.
1

cat somefile.css | awk '{gsub(/{|}|;/,"&\n"); print}' >> uncompressed.css

lrvick · 2009-06-02 15:51:51 37
resolve hostname to IP our vice versa with less output

inverted version: resolveip -s 216.34.181.xxx freshmeat.net Show Sample Output
This is sample output - yours may be different.
```
root@zappa:~/Music# resolveip -s www.freshmeat.net
216.34.181.xxx
```
1

resolveip -s www.freshmeat.net

ncaio · 2009-06-02 14:25:53 7
print random commandlinefu.com submission

ok I'm sure it's not pretty Show Sample Output
This is sample output - yours may be different.
```
Terminal - runs a bash script in debugging mode    
bash -x ./post_to_commandlinefu.sh
```
-2

lynx -source http://www.commandlinefu.com/commands/random | sed 's/<[^>]*>//g' | head -1037 | tail -10 | sed -e 's/^[ \t]*//' | sed '/^$/d' | head -2

lxtips · 2009-06-02 09:48:59 11
Get yesterday's date or a previous time

With this command you can get a previous or future date or time. Where can you use this? How about finding all files modified or created in the last 5 mins? touch -t `echo $(date -d "5 minute ago" "+%G%m%d%H%M.%S")` me && find . -type f -newer me List all directories created since last week? touch -t `echo $(date -d "1 week ago" "+%G%m%d%H%M.%S")` me && find . -type d -cnewer me I'm sure you can think of more ways to use it. Requires coreutils package. Show Sample Output
This is sample output - yours may be different.
```
Sun May 31 18:36:28 MYT 2009
Mon Jun  1 07:36:28 MYT 2009
Mon Jun  1 16:33:28 MYT 2009
Tue Jun  2 10:36:28 MYT 2009
```
5

date -d '1 day ago'; date -d '11 hour ago'; date -d '2 hour ago - 3 minute'; date -d '16 hour'

LrdShaper · 2009-06-01 10:41:56 9
Remove all mail in Postfix mail queue.
This is sample output - yours may be different.
2

postsuper -d ALL

virtualshock · 2009-05-31 23:47:02 4
Check wireless link quality with dialog box

The variable WIRELESSINTERFACE indicates your wireless interface
This is sample output - yours may be different.
1

while [ i != 0 ]; do sleep 1 | dialog --clear --gauge "Quality: " 0 0 $(cat /proc/net/wireless | grep $WIRELESSINTERFACE | awk '{print $3}' | tr -d "."); done

ncaio · 2009-05-31 16:09:23 12
Get pages number of the pdf file
This is sample output - yours may be different.
7

pdfinfo Virtualization_A_Beginner_Guide.pdf | awk /Pages/

ncaio · 2009-05-31 15:45:38 7
Mount a CD-ROM on Solaris (SPARC)

This will allow you to mount a CD-ROM on Solaris SPARC 9 or lower. This will not work on Solaris 10 due to void and the volume management daemons. www.fir3net.com
This is sample output - yours may be different.
-2

mkdir -p /cdrom/unnamed_cdrom ; mount -F hsfs -o ro `ls -al /dev/sr* |awk '{print "/dev/" $11}'` /cdrom/unnamed_cdrom

felix001 · 2009-05-31 08:42:20 5
Scrollable Colorized Long Listing - Hidden Files Sorted Last

To sort hidden files first, simply switch the two inner `ls` commands. I have this aliased to `dira` `dir` is aliased to the simpler version with no hidden files: ls -l --color=always | less -R
This is sample output - yours may be different.
2

less -Rf <( cat <(ls -l --color=always) <(ls -ld --color=always .*) )

asmoore82 · 2009-05-30 23:51:16 9
unzip all zip files under a current directory in the directory those files were in

unzips all zip files in any subdirectory under the current directory. The zip files are unzipped in their respective subdirs
This is sample output - yours may be different.
-3

for f in `find ./ -name "*.zip"` ; do p=`pwd`; d=`dirname $f`; cd $d; b=`basename $f`; unzip $b; cd $p; done

packetloss · 2009-05-30 03:42:53 10
Check syntax of all PHP files before an SVN commit

Really only valuable in a PHP-only project directory. This is using standard linux versions of the tools. On most older BSD variants of sed, use -E instead of -r. Or use: sed 's/\+[[:space:]]\{1,\}//' instead. Show Sample Output
This is sample output - yours may be different.
```
No syntax errors detected in blah/crap.php
No syntax errors detected in thing/stuff.php
PHP Warning:  Unterminated comment starting line 38 in otherthing/include/bootstrap.php on line 38
```
0

for i in `svn status | egrep '^(M|A)' | sed -r 's/\+\s+//' | awk '{ print $2 }'` ; do if [ ! -d $i ] ; then php -l $i ; fi ; done

brephophagist · 2009-05-29 23:59:28 5
Backup sda5 partition to ftp ( using pipes and gziped backup )
This is sample output - yours may be different.
7

dd if=/dev/sda5 bs=2048 conv=noerror,sync | gzip -fc | lftp -u user,passwd domain.tld -e "put /dev/stdin -o backup-$(date +%Y%m%d%H%M).gz; quit"

sputnick · 2009-05-29 21:56:32 5
Show display type
This is sample output - yours may be different.
-1

ioreg -lw0 | grep IODisplayEDID | sed "/[^<]*</s///" | xxd -p -r | strings -6

unixmonkey4003 · 2009-05-29 18:52:12 4
Remove an old gmetric statistic

The -d flag sets the lifetime of a metric and defaults to 0 hence why old metrics continue to be graphed in the dashboard. Submitting a dummy value and short lifetime ensures that the metric is removed from the dashboard.
This is sample output - yours may be different.
-1

gmetric -n $METRIC_NAME -v foo -t string -d 10

root · 2009-05-29 14:21:24 7
view solaris system logs

read system logs of sun solaris 9
This is sample output - yours may be different.
-10

more /var/adm/messages

miccaman · 2009-05-29 12:10:18 19
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Selecting a random file/folder of a folder

I used only shuf command.

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

cp the file

Copy the file with the given .extension at the source file's location. Eliminates the typing of long paths again and again.

Get all files of particular type (say, PDF) listed on some wegpage (say, example.com)

This example command fetches 'example.com' webpage and then fetches+saves all PDF files listed (linked to) on that webpage. [*Note: of course there are no PDFs on example.com. This is just an example]

Merge several pdf files into a single file

Check if it's your binary birthday!

Print out your age in days in binary. Today's my binary birthday, I'm 2^14 days old :-) . This command does bash arithmatic $(( )) on two dates: Today: $(date +%s) Date of birth: $(date +%s -d YYYY-MM-DD) The dates are expressed as the number of seconds since the Unix epoch (Jan 1970), so we devide the difference by 86400 (seconds per day). . Finally we pipe "obase=2; DAYS-OLD" into bc to convert to binary. (obase == output base)

Check every URL redirect (HTTP status codes 301/302) with curl

curl -sLkIv --stderr - https://t.co/2rQjHfptZ8 -s: silences the output when piped to a different command -L: follow every redirect -k: ignores certificate errors -I: just request the headers -v: be verbose --stderr - : redirect stderr to stdout https://t.co/2rQjHfptZ8: URL to check for redirects piped to grep -i location: -i: grep target text ignoring case location: : greps every string containing "location:" piped to awk {'print $3'} prints the third column in every string piped to sed '/^$/d' removes blank lines

list any Linux files without users or groups

suspicious/anomalous ownership may indicate system breach; should return no results

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

Install pip with Proxy

Installs pip packages defining a proxy

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All commands (14,187)

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