Commands tagged token (6)

  • easily strace all your apache processes

    This one-liner will use strace to attach to all of the currently running apache processes output and piped from the initial "ps auxw" command into some awk. Show Sample Output


    7
    ps auxw | grep sbin/apache | awk '{print"-p " $2}' | xargs strace
    px · 2011-03-14 21:45:22 8
  • For a $FILE, extracts the path, filename, filename without extension and extension.

    Useful for use in other scripts for renaming, testing for extensions, etc. Show Sample Output


    6
    FILENAME=${FILE##*/};FILEPATH=${FILE%/*};NOEXT=${FILENAME%\.*};EXT=${FILE##*.}
    eduo · 2009-06-10 16:11:38 7
  • easily strace all your apache processes

    This version also attaches to new processes forked by the parent apache process. That way you can trace all current and *future* apache processes.


    1
    ps auxw | grep sbin/apache | awk '{print"-p " $2}' | xargs strace -f
    msealand · 2013-02-19 19:14:57 1
  • Get AWS temporary credentials ready to export based on a MFA virtual appliance

    You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials Show Sample Output


    1
    head -n1 | xargs -I {} aws sts get-session-token --serial-number $MFA_ID --duration-seconds 900 --token-code {} --output text --query [Credentials.AccessKeyId,Credentials.SecretAccessKey,Credentials.SessionToken]
    keymon · 2016-04-12 10:57:00 8
  • easily strace all your apache processes


    0
    pgrep -f /usr/sbin/httpd | awk '{print"-p " $1}' | xargs strace
    savagemike · 2015-06-10 22:55:35 6
  • easily strace all your apache processes


    -1
    ps -C apache o pid= | sed 's/^/-p /' | xargs strace
    depesz · 2011-03-15 08:46:33 1

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

Gentoo: Get the size of all installed packets, sorted
On a Gentoo system, this command will tell you which packets you have installed and sort them by how much space they consume. Good for finding out space-hogs when tidying up disk space.

Which .service related this file?
I use this as an alias to get all .service files related a single installed file/conf (if it has services, of course). For rpm based systems ;)

copy partition table from /dev/sda to /dev/sdb

How to check network connection from one interface
This command only check the network connection from given eth. This is very useful if you are using more then one interface in your server or laptop.

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

Convert wma to mp3@128k
Convert all wma to mp3@128k with ffmpeg into directory.

Test your total disk IO capacity, regardless of caching, to find out how fast the TRUE speed of your disks are
Depending on the speed of you system, amount of RAM, and amount of free disk space, you can find out practically how fast your disks really are. When it completes, take the number of MB copied, and divide by the line showing the "real" number of seconds. In the sample output, the cached value shows a write speed of 178MB/s, which is unrealistic, while the calculated value using the output and the number of seconds shows it to be more like 35MB/s, which is feasible.

LVM2 Reduce
Just the commands for the lvreduce I keep forgetting.

Substrings a variable
substrings a variable starting at position. If no offset given prints rest of the line

show the working directories of running processes
this shows the CWD of every running `java' command. YMMV but we often switch to a working directory for each service to start and run from there -- therefore this quicly shows what is running by a more meaningful name than command alone (the -bw prevents using blocking system calls which speeds this up quite a bit in the presence of remote mounted filesystems)

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for: