Commands by tmsh (5)

  • Personally, I save this in a one line script called ~/bin/sci: #!/bin/bash for pid in `screen -ls | grep -v $STY | grep tached | awk '{print $1;}' | perl -nle '$_ =~ /^(\d+)/; print $1;'`; do screen -x $pid; done I also use: alias scx='screen -x' alias scl='screen -ls | grep -v $STY'

    for pid in `screen -ls | grep -v $STY | grep tached | awk '{print $1;}' | perl -nle '$_ =~ /^(\d+)/; print $1;'`; do screen -x $pid; done
    tmsh · 2010-06-22 23:06:31 0
  • It's actually really helpful if you've done a lot of replaces in say a header file, and now you want to replace the same text in the source code file.

    In vim: q: && v[cursor movement]y && [paste/edit/save to /tmp/tmp.vim] && move to window to modify && :so /tmp/tmp.vim
    tmsh · 2010-05-12 03:03:40 2
  • Because entering ':' requires that you press shift, sometimes common command-line / mini-buffer commands will be capitalized by accident. Show Sample Output

    Create aliases for common vim minibuffer/cmd typos
    tmsh · 2009-12-28 20:58:29 0
  • I don't know if you've used sqsh before. But it has a handy feature that allows you to switch into vim to complete editing of whatever complicated SQL statement you are trying to run. But I got to thinking -- why doesn't bash have that? Well, it does. It's called '|'! Jk. Seriously, I'm pretty sure this flow of commands will revolutionize how I administer files. And b/c everything is a file on *nx based distros, well, it's handy. First, if your ls is aliased to ls --color=auto, then create another alias in your .bashrc: alias lsp='ls --color=none' Now, let's say you want to rename all files that begin with the prefix 'ras' to files that begin with a 'raster' prefix. You could do it with some bash substitution. But who remembers that? I remember vim macros because I can remember to press 'qa' and how to move around in vim. Plus, it's more incremental. You can check things along the way. That is the secret to development and probably the universe. So type something like: lsp | grep ras Are those all the files you need to move? If not, modify and re-grep. If so, pipe it to vim. lsp | grep ras | vim - Now run your vim macros to modify the first line. Assuming you use 'w' and 'b' to move around, etc., it should work for all lines. Hold down '@@', etc., until your list of files has been modified from ras_a.h ras_a.cpp ras_b.h ras_b.cpp to: mv ras_a.h raster_a.h mv ras_a.cpp raster_a.cpp mv ras_b.h raster_b.h mv ras_b.h raster_b.cpp then run :%!bash then run :q! then be like, whaaaaa? as you realize your workflow got a little more continuous. maybe. YMMV.

    vim -
    tmsh · 2009-11-10 22:25:36 9
  • Resets the scroll parameter to the default (half the rows in the current window). The scroll parameter can be inadvertently set to 1, e..g., if you type '1 Ctrl-D' or '1 Ctrl-U' in normal mode.

    :set scroll=0
    tmsh · 2009-10-10 07:38:27 1

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Batch rename extension of all files in a folder, in the example from .txt to .md

sort list of email addresses by domain.tld
email random list can be created here:

Recursive cat - concatenate files (filtered by extension) across multiple subdirectories into one file
Useful if you have to put together multiple files into one and they are scattered across subdirectories. For example: You need to combine all .sql files into one .sql file that would be sent to DBAs as a batch script. You do get a warning if you create a file by the same extension as the ones your searching for. find . -type f -name *.sql -exec cat {} > BatchFile.txt \;

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

Catch a proccess from a user and strace it.
It sits there in a loop waiting for a proccess from that user to spawn. When it does it will attach strace to it

find distro name / release version

Show which process is blocking umount (Device or resource is busy)
Instead of using force un-mounting, it's better to find the processes that currently use the relevant folder. Taken from:

Detect illegal access to kernel space, potentially useful for Meltdown detection
Based on capsule8 agent examples, not rigorously tested

Suspend to ram
No need to be root to do that. Relies on UPower (previously known as DeviceKit-Power).

switch case of a text file

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