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Commands tagged bash tricks

Terminal - Commands tagged bash tricks - 17 results

sort -t $'\t' -k 2 input.txt

2010-07-11 12:58:51

User: postrational

Functions: sort

Tags: Text Processing sort cut bash tricks join

Up
Down

Pass TAB as field separator to sort, join, cut, etc.

Use this BASH trick to create a variable containing the TAB character and pass it as the argument to sort, join, cut and other commands which don't understand the \t notation.

sort -t $'\t' ... join -t $'\t' ... cut -d $'\t' ...

<ALT> .

2010-01-28 03:33:31

User: fraktil

Tags: bash bash tricks

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Insert the last argument of the previous command

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

<CTRL+w>

2010-01-27 22:13:29

User: jslopez

Tags: bash bash tricks

Up
Down

Erase a word

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

2010-01-27 19:52:51

User: wincus

Tags: bash bash tricks

Up
Down

Erase a word

hit BACKSPACE more than once to delete more words

2010-01-24 17:59:52

User: ringlerun

Tags: bash bash tricks

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Insert the last argument of the previous command

for example if you did a:

ls -la /bin/ls

then

ls !$

is equivalent to doing a

ls /bin/ls

Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

<ALT> .

2010-01-22 15:06:26

User: new_user

Tags: bash bash tricks

Up
Down

Insert the last argument of the previous command

Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

<ESC> .

2010-01-22 14:27:44

User: wincus

Tags: bash bash tricks

Up
Down

Insert the last argument of the previous command

Comments (6) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

echo 'mkcd() { mkdir -p "$@" && cd "$_"; }' >> ~/.bashrc

2010-01-13 09:37:56

User: phaidros

Functions: cd echo mkdir

Tags: bash cd mkdir bash tricks

-3

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mkdir & cd into it as single command

combines mkdir and cd

added quotes around $_, thanx to flatcap!

for file in $(seq -f '%03.f' 1 $TOTAL ); do echo "($file/$TOTAL)"; curl -f -O http://domain.com/Name_$file.ext; done

2010-01-12 15:23:44

User: nordri

Functions: echo file seq

Tags: bash curl seq bash tricks

-4

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download file1 file2 file3 file4 .... file 100

With counter format [001, 002, ..., 999] , nice with pictures or wallpapers collections.

Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

wget http://domain.com/file{1..100}

2010-01-12 14:28:04

User: wincus

Functions: wget

Tags: bash bash tricks

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download file1 file2 file3 file4 .... file 100

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

cat | gcc -x c -o a.out - && ./a.out && rm a.out

2009-12-27 04:37:24

User: dgalling

Functions: c++ cat gcc rm

Tags: C Programming bash bash tricks

-1

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Write and run a quick C program

This should work on any unix platform running bash. Just type the program into cat and give it a ^D when you're done, at which time it will compile, run, and remove the program. Obviously, you can run it without the "rm a.out" if you'd like to keep the binary. If you want to keep the source, well, you might as well just write it in vi or emacs first then.

Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

md () { mkdir -p "$@" && cd "$@"; }

2009-09-24 16:09:19

User: drewk

Functions: cd mkdir

Tags: bash cd function mkdir bash tricks

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Create a directory and change into it at the same time

How often do you make a directory (or series of directories) and then change into it to do whatever? 99% of the time that is what I do.

This BASH function 'md' will make the directory path then immediately change to the new directory. By using the 'mkdir -p' switch, the intermediate directories are created as well if they do not exist.

Ctrl-R <search-text>

2009-09-20 05:07:31

User: tarkasteve

Tags: bash tricks

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Search back through previous commands

Searches backwards through your command-history for the typed text. Repeatedly hitting Ctrl-R will search progressively further. Return invokes the command.

cd `dirname $_`

2009-08-07 07:08:31

User: amaymon

Functions: cd

Tags: bash bash tricks

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Go to parent directory of filename edited in last command

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

cd !$:h

2009-08-07 00:37:08

User: lingo

Functions: cd

Tags: bash bash tricks

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Go to parent directory of filename edited in last command

Uses the last argument of the last executed command, and gets the directory name from it.

Use $!:t for the filename alone, without the dirname.

a=`printf "%*s" 16`;b=${a//?/{0..1\}}; echo `eval "echo $b"`

2009-06-13 06:32:35

User: rhythmx

Functions: echo

Tags: bash bash tricks

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Count to 65535 in binary (for no apparent reason)

Yes, it's useless.

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

FILENAME=`echo ${FILE##*/}`;FILEPATH=`echo ${FILE%/*}`;NOEXT=`echo ${FILENAME%\.*}`;EXT=`echo ${FILE##*.}`

2009-06-10 16:11:38

User: eduo

Tags: bash echo script token bash tricks parameters

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For a $FILE, extracts the path, filename, filename without extension and extension.

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