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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.
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Commands using cat from sorted by
Terminal - Commands using cat - 437 results
for i in {1..256};do p=" $i";echo -e "${p: -3} \\0$(($i/64*100+$i%64/8*10+$i%8))";done|cat -t|column -c120
2014-04-04 16:54:53
User: AskApache
Functions: cat column echo

Prints out an ascii chart using builtin bash! Then formats using cat -t and column.

The best part is:

echo -e "${p: -3} \\0$(( $i/64*100 + $i%64/8*10 + $i%8 ))";

From: http://www.askapache.com/linux/ascii-codes-and-reference.html

num_errs=`grep ERROR /var/log/syslog | tee >(cat >&2) | wc -l`
2014-03-12 00:04:24
Functions: cat tee wc

Many circumstances call for creating variable of a summary result while still printing the original pipe. Inserting "tee >(cat >&2)" allows the command output to still be printed while permitting the same output to be processed into a variable.

cat skype_log | sed -s 's/\(\[.*\]\) \(.*\): \(.*\)/<\2> \3/'
pdftk *.pdf cat output merged.pdf
2014-03-02 01:53:37
User: o0110o
Functions: cat

Merge Multiple PDFs In Alphabetical Order

cat /proc/cpuinfo | grep BogoMIPS | uniq | sed 's/^.*://g' | awk '{print($1 / 4) }'
cat cachedump.txt | awk -F : '{print $2":"$1}'
find . -name *.properties -exec /bin/echo {} \; -exec cat {} \; | grep -E 'listen|properties'
while true; do cat "file"; done | nc -v -l 1337
2014-02-06 03:02:58
User: bknk
Functions: cat

A TCP server that keeps the same socket open, sending the contents of "file" repeatedly.

cat /dev/urandom | env LC_CTYPE=C tr -dc a-zA-Z0-9 | head -c 16; echo
2014-02-05 15:04:07
User: yakovlev
Functions: cat env head tr

Feel free to put this in your ~/.profile:

random(){ cat /dev/urandom | env LC_CTYPE=C tr -dc $1 | head -c $2; echo; }

Then use it to generate passwords:

random [:alnum:] 16

Or DNA sequences:

random ACGT 256
cat /etc/shadow
find . -name "*.URL" | while read file ; do cat "$file" | sed 's/InternetShortcut/Desktop Entry/' | sed '/^\(URL\|\[\)/!d' > "$file".desktop && echo "Type=Link" >> "$file".desktop ; done
diff <(cat /etc/fstab | grep vol | grep -v "^#" | awk '{print $1}') <(df -h | grep vol)
2014-01-23 15:18:08
User: Koobiac
Functions: awk cat df diff grep
Tags: diff fstab df

With this command, you can check the difference between the volumes mounted and the volume in /etc/fstab.

proot -r /media/user/ubuntu12.10/ cat /etc/motd
2014-01-21 07:50:22
User: totti
Functions: cat

PRoot is a user-space implementation of chroot, mount --bind, and binfmt_misc. This means that users don't need any privileges or setup to do things like using an arbitrary directory as the new root filesystem, making files accessible somewhere else in the filesystem hierarchy, or executing programs built for another CPU architecture transparently through QEMU user-mode. Also, developers can use PRoot as a generic Linux process instrumentation engine thanks to its extension mechanism, see CARE for an example. Technically PRoot relies on ptrace, an unprivileged system-call available in every Linux kernel.


echo "text to prepend" | cat - file
2013-12-18 15:54:17
User: leni536
Functions: cat echo
Tags: cat replace

Prepend text to a file. It doen't need temporary files, ed or sed.

ssh USER@HOST cat REMOTE_FILE.mp4 | tee LOCAL_FILE.mp4 | mplayer -
2013-11-28 11:25:26
User: flatcap
Functions: cat ssh tee

Securely stream a file from a remote server (and save it locally).

Useful if you're impatient and want to watch a movie immediately and download it at the same time without using extra bandwidth.

This is an extension of snipertyler's idea.

Note: This command uses an encrypted connection, unlike the original.

cat file | paste -s -d'%' - | sed 's/\(^\|$\)/"/g;s/%/","/g'
while true; do date; (curl -s -o 1.html http://www.biglion.ru/deals/ebay-80/ &); sleep 5; cat 1.html | grep "&#1082;&#1091;&#1087;&#1086;&#1085;&#1086;&#1074;" | awk -F"<div>" '{print $2}' | awk -F"<span>" '{print $1}'; done
2013-11-08 12:40:05
User: sxiii
Functions: awk cat grep sleep

Processes biglion quantity of sold ebay coupons/bonus codes, so you can know approximate count of users who buyed the coupons and when sales are come up again.

You can change sleep parameter so script will work slowly or faster (default is 5 seconds).

Additional requirements: curl

Standart tools used: awk, date, cat, grep (bash)

find ./ -type f -size +500k -exec ls -1Ash {} \; | sort -hr | cat -n
2013-10-01 10:32:28
User: rgregor
Functions: cat find ls sort

"find ./ ..." could be replaced with "find $PWD ..." to display absolute path instead of relative path.

du -ah | sort -hr | head -n50 | cat -n
echo '#! /usr/bin/ksh\ncat $2 | openssl dgst -sha256 | read hashish; if [[ $hashish = $1 ]]; then echo $2: OK; else echo $2: FAILED; fi;' > shacheck; chmod +x shacheck; cat hashishes.sha256 | xargs -n 2 ./shacheck;
2013-09-18 21:51:20
User: RAKK
Functions: cat chmod echo read xargs

This command is used to verify a sha256sum-formatted file hash list on IBM AIX or any other UNIX-like OS that has openssl but doesn't have sha256sum by default. Steps:

1: Save to the filesystem a script that:

A: Receives as arguments the two parts of one line of a sha256sum listing

B: Feeds a file into openssl on SHA256 standard input hash calculation mode, and saves the result

C: Compares the calculated hash against the one received as argument

D: Outputs the result in a sha256sum-like format

2: Make the script runnable

3: Feed the sha256sum listing to xargs, running the aforementioned script and passing 2 arguments at a time

cat /dev/cdrom > ~/img.iso
cat /dev/zero > /dev/sda
2013-09-13 21:47:48
User: fhh
Functions: cat

Exactly the same effect with 3 less characters ;-) (Removes all files/filesystems of a harddisk. It removes EVERYTHING of your hard disk. Be careful when to select a device.)

You can press Ctrl + C after few seconds

(No output)

cat /var/log/apache2/access_logs | cut -d' ' -f1 | sort | uniq -c | sort -n
2013-09-07 23:57:31
User: while0pass
Functions: cat cut sort uniq

The first sort is necessary for ips in a list to be actually unique.