fancy command line ncdu clone Show Sample Output
This will create a permanent alias to colorize the search pattern in your grep output
Next time you are leaching off of someone else's wifi use this command before you start your bittorrent ...for legitimate files only of course. It creates a hexidecimal string using md5sum from the first few lines of /dev/urandom and splices it into the proper MAC address format. Then it changes your MAC and resets your wireless (wlan0:0). Show Sample Output
Uses the data in the /proc system, provided by the acpid, to find out the CPU temperature. Can be run on systems without lm-sensors installed as well. Show Sample Output
- convert unixtime to human-readable with awk - useful to read logfiles with unix-timestamps, f.e. squid-log: sudo tail -f /var/log/squid3/access.log | awk '{ print strftime("%c ", $1) $0; } Show Sample Output
Can change language and speed, see espeak man page for options. (Install espeak in your linux distro via yum or apt-get) For insomniacs you may need to enclose in a while true; do ...; done loop ;) Show Sample Output
Converts reserved characters in a URI to their percent encoded counterparts.
Alternate python version:
echo "$url" | python -c 'import sys,urllib;print urllib.quote(sys.stdin.read().strip())'
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This will reboot as the Grub 2 option.
You can also do this for seconds, minutes, hours, etc... Can't use dates before the epoch, though. Show Sample Output
stop man page content from disappearing on exit echo "export LESS='FiX'" >> ~/.bashrc man bash 'q'uit out of man page content will stay on screen Show Sample Output
works at least in bash. returns integer in range 0-32767. range is not as good, but for lots of cases it's good enough.
Would create a file with a meaningful title. Dedicated to John Cons, who is annoying us users. Merry Christmas!!! Show Sample Output
This command will give you a list of available keyboard shortcuts according to stty. Show Sample Output
When setting up a new aliases file, or having creating a new file.. About every time after editing an aliases file, I source it. This alias makes editing alias a bit easier and they are useful right away. Note if the source failed, it will not echo "aliases sourced". Sub in vi for your favorite editor, or alter for ksh, sh, etc.
limite = threshold Show Sample Output
You can use ordinary printf to convert "%23%21%2fbin%2fbash" into "#!/bin/bash" with no external utilities, by using a little known printf feature -- the "%b" specifier converts shell escapes. Replace % with \x and printf will understand the urlencoded string. BASH's printf has an extension to set a variable directly, too. So you get to convert urlencoded strings from garble to plaintext in one step with no externals and no backticks. Show Sample Output
Here is the full function (got trunctated), which is much better and works for multiple queries. function cmdfu () { local t=~/cmdfu; until [[ -z $1 ]]; do echo -e "\n# $1 {{{1" >> $t; curl -s "commandlinefu.com/commands/matching/$1/`echo -n $1|base64`/plaintext" | sed '1,2d;s/^#.*/& {{{2/g' | tee -a $t > $t.c; sed -i "s/^# $1 {/# $1 - `grep -c '^#' $t.c` {/" $t; shift; done; vim -u /dev/null -c "set ft=sh fdm=marker fdl=1 noswf" -M $t; rm $t $t.c } Searches commandlinefu for single/multiple queries and displays syntax-highlighted, folded, and numbered results in vim. Show Sample Output
outputs a f=220Hz guitar string sound (fifth string A) needs ALSA
Pings all the hosts on 192.168.1.0/24 in parallel, so it is very fast. Alive host IP addresses are echoed to stdout as pings are responded to. Show Sample Output
/lib/ld-linux.so.2
is the runtime linker/loader for ELF binaries on Linux.
=(cmd) is a zsh trick to take the output for the command "inside" it and save it to a temporary file.
echo -e 'blah' | gcc -x c -o /dev/stdout -
pipes the C source to gcc. -x c tells gcc that it's compiling C (which is required if it's reading from a pipe). -o /dev/stdout - tells it to write the binary to standard output and read the source from standard input.
because of the the =() thing, the compiled output is stashed in a tempfile, which the loader then runs and executes, and the shell tosses the tempfile away immediately after running it.
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This command is a bit Linux specific, as --stdin doesn't exist for passwd on many Unix machines. Further, useradd is high level in most distributions and Unix derivatives except for the Debian family of distros, where adduser would be more appropriate. The last bit, with chage, will force the user to change their password on new login.
Give the Speed and Link status of eth# 0-3. This is sort of what mii-tool does, but eth-tool is better, yet lacks device discovery. Show Sample Output
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