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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

Top Tags



Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

Commands tagged log from sorted by
Terminal - Commands tagged log - 39 results
while true; do (echo -n $(date +"%F %T"):\ ; xwininfo -id $(xprop -root|grep "ACTIVE_WINDOW("|cut -d\ -f 5) | grep "Window id" | cut -d\" -f 2 ) >> logfile; sleep 60; done
2015-09-23 23:00:14
User: BeniBela
Functions: cut date echo grep sleep

This logs the titles of the active windows, thus you can monitor what you have done during which times. (it is not hard to also log the executable name, but then it is gets too long)

sort -s -b -t' ' -k 4.9,4.12n -k 4.5,4.7M -k 4.2,4.3n -k 4.14,4.15n -k 4.17,4.18n -k 4.20,4.21n access.log*
2015-07-16 00:22:03
User: sesom42
Functions: sort
Tags: sort log apache

Sort Apache access logs by date and time using sort key field feature

FILE=somefile.js; LOG=~/changes.diff; truncate -s0 ${LOG}; for change in $(svn log ${FILE} | awk -F' | ' '/^r[0-9]+/{print $1}'); do svn log -c ${change} >> ${LOG}; printf "\n" >> ${LOG}; svn diff -c ${change} >> ${LOG}; printf "\n\n\n" >> ${LOG}; done
2014-12-23 20:00:54
User: hochmeister
Functions: awk diff printf
Tags: svn diff log

from a svn repo, print a log, with diff, of each commit touching a given file

perl -ne 'if (/^(\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2},\d{3} )/ ) { $t=$1; print $_ } else { print $t . $_ }'
2014-05-21 08:54:27
Functions: perl

If you have a logfile where some lines start with timestamps like "2014-05-01 12:34:56,123" but other lines are missing the timestamp (like stack traces or object dumps), then use this script to copy the most recent timestamp to any lines that are missing it.

This is useful for merging log files, since you can then safely sort by timestamp to merge the files.

git log --pretty=oneline --abbrev-commit
(echo -e "HTTP/1.1 200 Ok\n\r"; tail -f /var/log/syslog) | nc -l 1234
2013-02-09 06:15:42
User: adimania
Functions: echo tail

This one is tried and tested for Ubuntu 12.04. Works great for tailing any file over http.

svnll(){svn log "$@"|( read; while true; do read h||break; read; m=""; while read l; do echo "$l" | grep -q '^[-]\+$'&&break; [ -z "$m" ] && m=$l; done; echo "$h % $m" | sed 's#\(.*\) | \(.*\) | \([-0-9 :]\{16\}\).* % \(.*\)#\1 \2 (\3) \4#'; done)}
2012-03-25 20:39:05
User: vhotspur
Functions: echo grep read sed
Tags: log subversion

Emulate (more or less) Git equivalent of

git log --format='tformat:%h %an (%cr) %s'
tail -f production.log | perl -ne 'if (/^Completed.in.(\d+)/){$d = int($1/1000);print "\n";$f{$d}++;for $t (sort(keys(%f))){print $t."s: ".$f{$t}."\n"}}'
2012-02-23 14:37:33
User: theist
Functions: perl tail

Commandline perl filter for, using a production.log from a rails app, display on realtime the count of requests grouped by "seconds to complete" (gross round, but fair enough for an oneliner) :)

curl http://whatthecommit.com/index.txt
svn log -v -r{2009-11-1}:HEAD | awk '/^r[0-9]+ / {user=$3} /./{if (user=="george") {print}}' | grep -E "^ M|^ G|^ A|^ D|^ C|^ U" | awk '{print $2}' | sort | uniq
2011-12-05 07:36:44
User: smilyface
Functions: awk grep sort
Tags: svn awk log

svn log -v --> takes log of all



-r {from}{to} --> gives from and to revision



awk of line 'r'with numbers

Assign user=3rd column [ie; username]



if username = George

print details



Print lines starts with M/U/G/C/A/D

[* A Added * D Deleted * U Updated * G Merged * C Conflicted]



sort all files



Print only uniq file's name alone.

curl -s 'http://whatthecommit.com/' | grep '<p>' | cut -c4-
find . -type f | xargs grep -n "Old Text" | tee filesChanged.txt | sed 's/:.*$//' | xargs sed -i 's/Old Text/New Text/g
tail -f /var/log/squid/access.loc | ccze -CA
tail -f /var/log/squid/access.log | perl -p -e 's/^([0-9]*)/"[".localtime($1)."]"/e'
while true; do /bin/ping -q -c1 -w3 2>&1 > /dev/null || echo " ping failed at $(date +%d/%m/%y) $(date +%H:%M:%S)" >> /var/log/ping.log; sleep 10; done &
2011-05-12 01:51:07
User: Arkey
Functions: echo sleep

This command are using by me for checking connection with Internet.

lynx -dump -nolist http://whatthecommit.com/|sed -n 2p
2011-04-17 17:45:18
User: houghi
Functions: sed

Fetch comical VC commit messages from whatthecommit.com

curl -s http://whatthecommit.com | html2text | sed '$d'
2011-04-14 16:51:53
User: zbeekman
Functions: sed

Requires html2text. Print bad, but often funny commit messages from whatthecommit.com

svn ci -m "$(curl -s http://whatthecommit.com | sed -n '/<p>/,/<\/p>/p' | sed '$d' | sed 's/<p>//')"
2011-04-14 15:05:14
User: zbeekman


curl -s http://whatthecommit.com | sed -n '/<p>/,/<\/p>/p' | sed '$d' | sed 's/<p>//'
svn log -r '{YYYY-MM-DD}:{YYYY-MM-DD}' | sed -n '1p; 2,/^-/d; /USERNAME/,/^-/p' | grep -E -v '^(r[0-9]|---|$)' | sed 's/^/* /g'
2010-12-22 17:52:19
User: antic
Functions: grep sed

* Replace USERNAME with the desired svn username

* Replace the first YYYY-MM-DD with the date you want to get the log (this starts at the midnight event that starts this date)

* Replace the second YYYY-MM-DD with the date after you want to get the log (this will end the log scan on midnight of the previous day)

Example, if I want the log for December 10, 2010, I would put {2010-12-10}:{2010-12-11}

sed -n '/05\/Dec\/2010/,$ p' access.log | goaccess -s -b
2010-12-13 17:37:33
User: allinurl
Functions: sed

GoAccess is an open source real-time Apache web log analyzer and interactive viewer that runs in a terminal in *nix systems. It provides fast and valuable HTTP statistics for system administrators that require a visual server report on the fly. http://goaccess.prosoftcorp.com/

alias sshv='ssh -vvv -o LogLevel=DEBUG3'
2010-10-30 11:23:52
User: AskApache
Functions: alias

When debugging an ssh connection either to optimize your settings ie compression, ciphers, or more commonly for debugging an issue connecting, this alias comes in real handy as it's not easy to remember the '-o LogLevel=DEBUG3' argument, which adds a boost of debugging info not available with -vvv alone.

Especially useful are the FD info, and the setup negotiation to create a cleaner, faster connection.

goaccess -f /var/log/apache2/access.log -s -b
2010-10-25 20:03:18
User: allinurl

GoAccess is an open source real-time Apache web log analyzer and interactive viewer that runs in a terminal in *nix systems. It provides fast and valuable HTTP statistics for system administrators that require a visual server report on the fly. http://goaccess.prosoftcorp.com/

for file in `cat urls.txt`; do echo -n "$file " >> log.txt; curl --head $file >> log.txt ; done
2010-10-19 02:54:13
User: Glutnix
Functions: echo file

urls.txt should have a fully qualified url on each line

prefix with

rm log.txt;

to clear the log

change curl command to

curl --head $file | head -1 >> log.txt

to just get the http status

git log -p -z | perl -ln0e 'print if /[+-].*searchedstring/'