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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!

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Commands by cicatriz from sorted by
Terminal - Commands by cicatriz - 18 results
fuser -n tcp -s <port> && echo "+open"
egrep '__NR_' /usr/include/asm/unistd_`getconf -a | awk '$1~/^WORD/{print $2}'`.h | sed -e 's/^#define __NR_//' | column -t
echo -e "Terminal shortcut keys\n" && sed -e 's/\^/Ctrl+/g;s/M-/Shift+/g' <(stty -a 2>&1| sed -e 's/;/\n/g' | grep "\^" | tr -d ' ')
2011-02-10 17:38:05
User: cicatriz
Functions: echo grep sed stty tr

This command will give you a list of available keyboard shortcuts according to stty.

supportsWrap(){ ldd `which ${1}` | grep "libwrap" &>/dev/null && return 0 || return 1; }
2010-12-01 15:22:29
User: cicatriz
Functions: grep ldd return
Tags: vim Debian ldd

This function returns TRUE if the application supports tcp-wrapping or FALSE if not by reading the shared libraries used by this application.

( apache2ctl -t && service apache2 restart || (l=$(apache2ctl -t 2>&1|head -n1|sed 's/.*line\s\([0-9]*\).*/\1/'); vim +$l $(locate apache2.conf | head -n1)))
2010-11-26 18:12:08
User: cicatriz
Functions: head locate sed vim

Checks the apache configuration syntax, if is OK then restart the service otherwise opens the configuration file with VIM on the line where the configuration fails.

i=0;for s in `fuser -l`;do echo $((i++)) $s;done
netstat -lnp6 | grep :8080 | sed 's#^[^\/]*/\([a-z0-9]*\)#\1#'
2010-11-03 14:11:21
User: cicatriz
Functions: grep netstat sed

Gets the application's name that's listening from the port 8080 through IPv6

perl -e 'print crypt("PASSWORD",int(rand(128))).$/;'
grep -i "aborted login" /var/log/maillog | awk 'BEGIN{FS="="}{print substr($4,8)}' | cut -d"," -f1
2010-09-29 21:05:31
User: cicatriz
Functions: awk cut grep

Prints a list of ip that tried to login on SMTP/IMAP/POP3/etc.

ss -ln | awk '$3~/([0-9]+)/{print $3}' | sed 's/.*\:\([0-9]\+\)$/\1/'
2010-09-21 12:45:52
User: cicatriz
Functions: awk sed

ss is a tool that will help you to get all kinds of useful information about the current sockets on a localhost. You can also get the uid of the daemons process using the flag:

ss -le
svn log 2>&1 | egrep '^r[0-9]+' | cut -d "|" -f2 | sort | uniq -c
ps ax --format=pid,eip,esp,user,command
2010-09-02 12:40:41
User: cicatriz
Functions: ps

'ps' let you specify the format that you want to see on the output.

setserial -g /dev/ttyS[0-9]* | grep -v "unknown"
ldd /bin/bash | awk 'BEGIN{ORS=","}$1~/^\//{print $1}$3~/^\//{print $3}' | sed 's/,$/\n/'
2010-08-06 12:18:56
User: cicatriz
Functions: awk ldd sed

For example, you need to make a copy of all the libraries that a certain application uses, with this command you can list and copy them.

ls -la | grep $(date +%Y-%m-%d) | egrep -v -e '\.{1,2}' | sed "s/.*\:[0-9]\{2\} \(.\+\)$/\\1/g"
netstat -l -p --tcp | egrep -e 'www.*[0-9]{3,4}\/(apache2|httpd)' | awk '{print$7}'
egrep '(\[error\])+.*(PHP)+' /var/log/apache2/error.log
awk '$1~/^DocumentRoot/{print $2}' /etc/apache2/sites-available/default