Commands by dtlp747

Commands by dtlp747 (3)

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Notepad in a browser (type this in the URL bar)

It doesn't save your notes, but it's great for jotting something down quickly.
This is sample output - yours may be different.
18

data:text/html, <html contenteditable>

dtlp747 · 2013-04-10 19:28:22 16
move up through directories faster (set in your /etc/profile or .bash_profile)

You can also remove the "&& pwd" if you don't want it to print out each directory as it moves up. Show Sample Output
This is sample output - yours may be different.
```
# > pwd
/dir1/dir2/dir3/dir4/dir5/dir6/dir7
# > up 4
/dir1/dir2/dir3/dir4/dir5/dir6
/dir1/dir2/dir3/dir4/dir5
/dir1/dir2/dir3/dir4
/dir1/dir2/dir3
# > pwd
/dir1/dir2/dir3
# >
```
1

function up { for i in `seq 1 $1`; do cd ../ && pwd; done }

dtlp747 · 2013-01-18 20:36:02 6
print a file on a single line

Example: you have a package.txt you want to install on a system. Instead of this: cat package.txt package1 package2 package3 You want it to cat out on one line so you can print "yum install package1 package2 package3"
This is sample output - yours may be different.
1

echo $(cat file)

dtlp747 · 2011-12-22 23:05:52 4

What's this?

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Count the total number of files in each immediate subdirectory

counts the total (recursive) number of files in the immediate (depth 1) subdirectories as well as the current one and displays them sorted. Fixed, as per ashawley's comment

Progress bar for MySQL import

Print out the progress of MySQL import using the pv command. Updates every second.

check open ports (both ipv4 and ipv6)

Check open TCP and UDP ports

determine if tcp port is open

for udp nmap -sU -p 80 hostname

Print a list of all hardlinks in the working directory, recursively

libpurple likes to hardlink files repeatedly. To ignore libpurple, use sed: | sed '/\.\/\.purple/d'

FAST Search and Replace for Strings in all Files in Directory

I needed a way to search all files in a web directory that contained a certain string, and replace that string with another string. In the example, I am searching for "askapache" and replacing that string with "htaccess". I wanted this to happen as a cron job, and it was important that this happened as fast as possible while at the same time not hogging the CPU since the machine is a server. So this script uses the nice command to run the sh shell with the command, which makes the whole thing run with priority 19, meaning it won't hog CPU processing. And the -P5 option to the xargs command means it will run 5 separate grep and sed processes simultaneously, so this is much much faster than running a single grep or sed. You may want to do -P0 which is unlimited if you aren't worried about too many processes or if you don't have to deal with process killers in the bg. Also, the -m1 command to grep means stop grepping this file for matches after the first match, which also saves time.

convert a mp4 video file to mp3 audio file (multiple files)

FizzBuzz One-liner

Check syntax for all PHP files in the current directory and all subdirectories

Find the package that installed a command

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