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Terminal - All commands - 11,488 results
man $(/bin/ls /bin | awk '{ cmd[i++] = $0 } END { srand(); print cmd[int(rand()*length(cmd))]; }')
2010-08-20 17:31:02
User: emilsit
Functions: awk man
Tags: man awk
-4

Build an awk array with all commands and then select a random one at the end.

This avoids spawning extra processes for counting with wc or generating random numbers.

Explicitly call /bin/ls to avoid interactions with aliases.

not () { "$@" && return 1 || return 0; }
2009-09-23 01:09:53
User: arcege
Functions: return
Tags: shell
-4

Useful in while and if statements

if not grep string filename; then echo string not found; exit 1; fi
export IFS=$'\n';for dir in $( ls -l | grep ^d | cut -c 52-);do du -sh $dir; done
cat file.txt|perl -ne '$_=~s/\s+/\n/g; print $_;'
2009-02-06 08:47:18
User: foodie
Functions: cat
-4

This command is useful for separating a text file where all the words are in one line. Any group of spaces will be replaced with a single newline. Instead of one long line of tokens. You'll have a long list of tokens. One token per line.

iotop
ps aux | grep [c]ommandname
nethogs
macchanger --random interface
2010-09-26 11:12:31
User: JulianTosh
Tags: sed openssl
-4

macchanger will allow you to change either 1) mfg code, 2) host id, or 3) all of the above. Use this at wifi hotspots to help reduce profiling.

printf "$string" | md5sum
files=(/usr/share/cowsay/cows/*); cowsay -f `echo ${files[$((RANDOM%${#files}))]}` <TEXT>
2011-02-20 05:43:01
User: lkjoel
-4

This will show a random cow with cowsay.

find . |more |grep -v filename |xargs rm
awk '{if (NR == 3) print}' <file>
2009-10-19 15:58:09
User: yooreck
Functions: awk
-5

I don't know if it's better but works fine :)

gawk '{n=$1;a=0;b=1;c=1;for(i=1;i<n;i++){c=a+b;a=b;b=c};print c}' << eof
2010-11-26 08:36:30
Functions: gawk
Tags: awk
-5

only take the first field on each row to compute the fibo on this number

find . -name "*.c" -exec sed -i "/\/sh/a\####################################\n#Date:2010-05-18\n#Company:XXXXX tech Co.\n#Author:Wangjunling\n#Copyright:gpl\n####################################" {} \;
iptables -F
removedir(){ read -p "Delete the current directory $PWD ? " human;if [ "$human" = "yes" ]; then [ -z "${PWD##*/}" ] && { echo "$PWD not set" >&2;return 1;}; rm -Rf ../"${PWD##*/}"/ && cd ..; else echo "I'm watching you" | pv -qL 10; fi; }
say `cat /path/to/textfile.txt`
p=$(netstat -nate 2>/dev/null | awk '/LISTEN/ {gsub (/.*:/, "", $4); if ($4 == "4444") {print $8}}'); for i in $(ls /proc/|grep "^[1-9]"); do [[ $(ls -l /proc/$i/fd/|grep socket|sed -e 's|.*\[\(.*\)\]|\1|'|grep $p) ]] && cat /proc/$i/cmdline && echo; done
2009-04-30 12:39:48
User: j0rn
Functions: awk cat grep ls netstat sed
-5

Ok so it's rellay useless line and I sorry for that, furthermore that's nothing optimized at all...

At the beginning I didn't managed by using netstat -p to print out which process was handling that open port 4444, I realize at the end I was not root and security restrictions applied ;p

It's nevertheless a (good ?) way to see how ps(tree) works, as it acts exactly the same way by reading in /proc

So for a specific port, this line returns the calling command line of every thread that handle the associated socket

netstat -nlput
wget -O - -q http://whatismyip.org/
2011-10-15 11:36:56
User: ztank1013
Functions: wget
-5

This just output your external IP, no extra characters at the end of line.

vim +143 filename.txt
man <command> then type h
2011-10-16 09:49:56
User: stanix
Functions: man type
-5

Read all chapters up to 'Jumping', improve your effectiveness of wirking in terminal.

Most useful are the Moving and Searching commands

watch 'ls -tr1 | tail -n1 | xargs tail'
2013-05-09 11:37:59
User: batandwa
Functions: tail watch xargs
Tags: tail ls xargs watch
-5

Watches for file modifications in the current directory and tails the file.

df -h
2009-07-08 11:25:28
User: Paaskehare
Functions: df
-5

Bulit-in function in linux, so should work on any linux distribution.

udhcpc -i eth0