Commands by fletch

Commands by fletch (3)

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Copy with progress
This is sample output - yours may be different.
15

rsync --progress file1 file2

fletch · 2010-02-25 19:57:01 18
pass the output of some command to a new email in the default email client

This depends on 'stripansi' and 'urlencode' commands, which exist on my system as these aliases: alias stripansi='perl -ple "s/\033\[(?:\d*(?:;\d+)*)*m//g;"' alias urlencode='perl -MURI::Escape -ne "\$/=\"\"; print uri_escape \$_"' The `open` command handles URLs on a Mac. Substitute the equivalent for your system (perhaps gnome-open). I don't use system `mail`, so I have this aliased as `mail` and use it this way: git show head | mail
This is sample output - yours may be different.
2

somecommand | open "mailto:?body=$(cat - | stripansi | urlencode)"

fletch · 2010-02-25 19:44:27 5
loop over a set of items that contain spaces

If you want to operate on a set of items in Bash, and at least one of them contains spaces, the `for` loop isn't going to work the way you might expect. For example, if the current dir has two files, named "file" and "file 2", this would loop 3 times (once each for "file", "file", and "2"): for ITEM in `ls`; do echo "$ITEM"; done Instead, use a while loop with `read`: ls | while read ITEM; do echo "$ITEM"; done Show Sample Output
This is sample output - yours may be different.
```
file
file 2
```
10

ls | while read ITEM; do echo "$ITEM"; done

fletch · 2009-03-22 23:33:13 9

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print all network interfaces' names and IPv4 addresses

ifconfig can't properly display interface's name longer 9 symbols,also it can't show IPs added thru ip command, so 'ip' should be used instead. This alias properly shows long names, bond interfaces and all interface aliases. loopback interface is ignored, since its IP is obvious

Get your external IP address ( 10 characters long )

Shortest url to a external IP-service, 10 characters.

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

Disable system bell in an X session

Execute this command in a terminal to disable the system-bell during X-session lifetime.

File rotation without rename command

Rotates log files with "gz"-extension in a directory for 7 days and enumerates the number in file name. i.e.: logfile.1.gz > logfile.2.gz I needed this line due to the limitations on AIX Unix systems which do not ship with the rename command.

List last opened tabs in firefox browser

Tuned for short command line - you can set the path to sessionstore.js more reliable instead of use asterixes etc. Usable when you are not at home and really need to get your actual opened tabs on your home computer (via SSH). I am using it from my work if I forgot to bookmark some new interesting webpage, which I have visited at home. Also other way to list tabs when your firefox has crashed (restoring of tabs doesn't work always). This script includes also tabs which has been closed short time before.

mtr, better than traceroute and ping combined

mtr combines the functionality of the traceroute and ping programs in a single network diagnostic tool. As mtr starts, it investigates the network connection between the host mtr runs on and HOSTNAME. by sending packets with purposly low TTLs. It continues to send packets with low TTL, noting the response time of the intervening routers. This allows mtr to print the response percentage and response times of the internet route to HOSTNAME. A sudden increase in packetloss or response time is often an indication of a bad (or simply over‐loaded) link.

Simultaneously running different Firefox profiles

After running $ firefox -ProfileManager and creating several different profiles, use this command to run multiple Firefox profiles simultaneously.

Check if you work on a virtual/physical machine in Linux

Command used to know if we are working on a virtual or physical machine. This command will use the dmidecode utility to retrieve hardware information of your computer via the BIOS. Run this command as root or with sudo.

Less a grep result, going directly to the first match in the first file

Really useful way to combine less and grep while browsing log files. I can't figure out how to make it into a true oneliner so paste it into a script file called lgrep: Usage: lgrep searchfor file1 [file2 file3] Advanced example (grep for an Exception in logfiles that starts with qc): lgrep Exception $(find . -name "qc*.log")

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