Commands by ideivid

Commands by ideivid (3)

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Show stats for dd

Have you ever wondered what the hell was dd command doing? well, there you have it... notice the -USR1 signal :)... Show Sample Output
This is sample output - yours may be different.
```
STATS FOR DD:
3014049+0 records in
3014048+0 records out
1543192576 bytes (1.5 GB) copied, 36.6224 s, 42.1 MB/s
```
-1

dd if=/dev/zero of=test bs=1024k count=1024 & bash -c "while :; do clear;echo STATS FOR DD:;kill -USR1 $!; sleep 1; done"

ideivid · 2011-08-19 01:10:18 9
Short and elegant way to backup a single file before you change it.

Remember to backup everything before changing it so you can restore all to normal.
This is sample output - yours may be different.
16

cp httpd.conf{,.bk}

ideivid · 2011-08-15 16:43:53 21
Monitor incoming connections of proxies and balancers.

Maybe this will help you to monitor your load balancers or reverse proxies if you happen to use them. This is useful to discover TIME OUTS and this will let you know if one or more of your application servers is not connected by checking. Show Sample Output
This is sample output - yours may be different.
```
Every 1.0s: /usr/sbin/lsof -p 24685 |awk '/TCP/{split($8,A,":"); split(A[2],B,">") ; split(B[1],C,"-"); print A[1],C[1],B[2], $9}' | sort | uniq -c                                                Fri Aug 12 13:58:17 2011

      1 172.1.1.1 35735 10.60.10.30 (ESTABLISHED)
      1 172.1.1.1 54371 10.60.10.31 (ESTABLISHED)
      1 172.1.1.1 icl 10.6.20.30 (ESTABLISHED)
      2 172.1.1.1 icl appcc (ESTABLISHED)
      1 * icl  (LISTEN)
```
2

watch -n 1 "/usr/sbin/lsof -p PID |awk '/TCP/{split(\$8,A,\":\"); split(A[2],B,\">\") ; split(B[1],C,\"-\"); print A[1],C[1],B[2], \$9}' | sort | uniq -c"

ideivid · 2011-08-12 19:16:38 4

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Combine multiple images into a video using ffmpeg

The -start_number can be ignored if sequence starts with 0, otherwise use first number in sequence

Remove orphaned dependencies on Arch

-Qdt Lists dependencies/packages which are no longer required by any packages -q Output only package name (not the version number) -R Remove package(s) Rest is self-explanatory. I just started out with Arch - so if there is any better/standard method to achieve the same - please suggest.

List open TCP/UDP ports

Move all files in subdirectories to current dir

Ask user to confirm

Returns true if user presses the key. Use it like $ Confirm "Continue" && do action

Validate openssh key & print checksum

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

copy with progress bar - rsync

-r for recursive (if you want to copy entire directories) src for the source file (or wildcards) dst for the destination --progress to show a progress bar

Install pip with Proxy

Installs pip packages defining a proxy

gpg decrypt a file

gpg command to decrypt a previously encrypted file on the command line. Can be optionally made into an alias: alias decrypt='gpg --output foo.txt --decrypt foo.txt.pgp'

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