Commands tagged bash

do 1000 at a time so that if your doodoo is deep you can avoid avoid "command-line too big" error

Unlike other alternatives, this command only relies on bash builtins and should also work on windows platforms with the bash executable.

Sparseness corresponds to the number 128 and can be adjusted. To print all possible digits instead of only 0 and 1 replace RANDOM%2 by RANDOM%10 or RANDOM%16 to add letters [A-F].

# put into .bashrc

function trash() {

if [ -z "$*" ] ; then

echo "Usage: trash filename"

else

local TRASH="${HOME}/.local/share/Trash"

if [ ! -d "$TRASH/files" ]; then mkdir -p "$TRASH/files"; fi

if [ ! -d "$TRASH/info" ]; then mkdir -p "$TRASH/info"; fi

local IFS_BKP=$IFS

IFS='

'

for FILE in $@ ; do

local BASE=$( basename "$FILE" )

local TRASH_NAME="$BASE"

local COUNTER=1

while [ -e "$TRASH/files/$TRASH_NAME" ]; do

COUNTER=`expr $COUNTER + 1`

TRASH_NAME="$BASE.$COUNTER"

done

local FULL_PATH=$( readlink -f "$FILE" )

local DATE=$( date +%Y-%m-%dT%H:%M:%S )

mv "$FULL_PATH" "$TRASH/files/$TRASH_NAME"

if [ $? -eq 0 ]; then

echo "[Trash Info]

Path=$FULL_PATH

DeletionDate=$DATE" > "$TRASH/info/$TRASH_NAME.trashinfo"

fi

done

IFS=$IFS_BKP

fi

}

Monitoring a log file with 'tail -f' is handy, but for emacs users monitoring the file with emacs is even better, because you can use all your familiar key bindings for copying regions, etc.

If you don't have seq or shuf, bash can be used.

hide your ass, buddy.

Use 'ctrl-@' to set a mark. See the first comment for a better explanation.

Super fast way to ftp/telnet/netcat/ssh/ping your loopback address for testing. The default route 0.0.0.0 is simply reduced to 0.

Cleaned up and silent with &>/dev/null at the end.

Execute commands serially on a list of hosts. Each ssh connection is made in the background so that if, after five seconds, it hasn't closed, it will be killed and the script will go on to the next system.

Maybe there's an easier way to set a timeout in the ssh options...

Generate a 18 character password from character set a-zA-Z0-9 from /dev/urandom, pipe the output to Python which prints the password on standard out and in crypt sha512 form.

This will check if a user is logged in using ssh and will log out the user automatically after the specified time in seconds without data retrieval on the server side.

Will work with bash and zsh so put it into your sourced shell file on the server side.

Be aware that users can change this themselves as it's just a envoronment variable.

Put this in your zshrc, source it, then run 'pkill -usr1 zsh' to source it in all open terminals. Also works with bash. More info: http://www.reddit.com/r/commandline/comments/12g76v/how_to_automatically_source_zshrc_in_all_open/

simple table

There is no need to use the shell or construct. Screen offers varius ways of detaching and reattaching. man screen and look for -[rRdD].

to create a named session: sdr moo

hide:

resume: sdr moo

Tries to avoid the fragile nature of scrapers by looking for user-input in the output as opposed to markup or headers on the web site.

Tries to reattach to screen, if it's not available, creates one.

created an alias "irc" for it, since sometimes i forget if there already is a screen session running with irssi, this way I avoid creating a new one by mistake.

Renames all files ending in "_test.rb" to "_spec.rb"

I doubt this works with other than bash, but then again, I havent tried.

The 'yes' utility is very simple, it outputs a hell of a lot of 'y's to standard input.

The '!!' command means 'the last command'. So this one-lines inputs a lot of y's into the last command, aggressively agreeing to everything. For instance, when doing apt-get.

You may want to just use the shortcut "." instead of "source"