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Terminal - All commands - 11,488 results

ls -1 | rename 's/\ /_/'

2009-03-17 17:33:41

User: servermanaged

Functions: ls rename

Up
Down

Substitute spaces in filename with underscore

Substitute spaces in filename with underscore, it work on the first space encountered.

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

<space>command

2009-03-17 16:25:29

User: eaZy

343

Up
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Execute a command without saving it in the history

Prepending one or more spaces to your command won't be saved in history.

Useful for pr0n or passwords on the commandline.

Tested on BASH.

for i in `find /sys/devices/*/*/usb* -name level` ; do echo -n "$i: " ; cat $i ; done

2009-03-17 16:22:15

User: path

Functions: cat echo

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Display usb power mode on all devices

rpm -qa --queryformat '%{installtime} \"%{vendor}\" %{name}-%{version}-%{release} %{installtime:date}\n' | grep "Thu 05 Mar"

2009-03-17 13:38:20

User: mpb

Functions: grep rpm

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Display a list of RPMs installed on a particular date

Find out which RPMs were installed on a particular date.

These would (naturally) include update RPMs.

This example shows searching for "Thu 05 Mar" (with grep).

Alternatively, pipe it to less so you can search inside less (with less's neat text highlighting of the search term):

rpm -qa --queryformat '%{installtime} \"%{vendor}\" %{name}-%{version}-%{release} %{installtime:date}\n' | less # (this example) search term: Thu 05 Mar

play $audio_file

2009-03-17 11:30:02

User: mpb

-3

Up
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Play audio file

"play" is part of "SoX"

SoX - Sound eXchange, the Swiss Army knife of audio manipulation.

For details, see: man sox

find -maxdepth 1 -type d -print0 | xargs -0 -I {} tar -cvzf {}.tar.gz {}

2009-03-17 11:12:53

User: piemme

Functions: find tar xargs

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create a backup for all directories from current dir

Create backup (.tar.gz) for all first-level directory from current dir.

lynx -accept_all_cookies -cmd_script=/your/keystroke-file

2009-03-17 00:38:36

User: Alanceil

Tags: lynx login cronjob

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Use lynx to run repeating website actions

This command will tell lynx to read keystrokes from the specified file - which can be used in a cronjob to auto-login on websites that give you points for logging in once a day *cough cough* (which is why I used -accept_all_cookies).

For creating your keystroke file, use:

lynx -cmd_log yourfile

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:!cp % %-

2009-03-17 00:34:24

User: mpb

Up
Down

Create a backup of file being edited while using vi

At the start of a vi session and *before* saving any changes use ":!cp % %-" to make a backup of the current file being edited.

example: vi /data/some/long/path/file

:!cp% %-

creates /data/some/long/path/file-

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# indicates a comment in shell

2009-03-16 23:15:33

User: mpb

-4

Up
Down

Using the "#" in shell is surprisingly useful.

Some of the uses I found:

a) As a visible copy buffer in shell history (caveat: do not use for passwords :-)

b) To build complex commands until ready then hit the HOME, DEL, ENTER keys to run it

c) Placing reference data into shell history (search for tags with CTRL-R TAGNAME)

d) Putting aside a "work in progress" command to focus on another task (HOME # ENTER)

ctrl-z

2009-03-16 20:58:31

User: mallegonian

Tags: bash hotkey

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Pause Current Thread

Hold ctrl and press z to pause the current thread. Run

fg

to resume it.

Comments (4) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

convert -font -misc-fixed-*-*-*-*-*-*-*-*-*-*-*-* -fill black -draw "text 270,260 \" `cal` \"" testpic.jpg newtestpic.jpg

2009-03-16 16:09:58

User: dasmna

Tags: ImageMagick

Up
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Add calendar to desktop wallpaper

Add calendar to desktop wallpaper , mess with the coordinates to place where you like

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alias lvim="vim -c \"normal '0\""

2009-03-16 15:41:00

User: lowkey

Functions: alias

Up
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Open the last file you edited in Vim.

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cp ./* .[!.]* ..?* /path/to/dir

2009-03-16 13:27:36

User: ako

Functions: cp

Tags: hidden copy file everything

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Copy all files. All normal files, all hidden files and all files starting with - (minus).

./* is for copying files starting with -

.[!.]* is for copying hidden files and avoiding copying files from the parent directory.

..?* is for copying files starting with .. (avoids the directory ..)

/path/to/dir the path to the directory where the files should be copied

Can also be used as a script. Input argument is /path/to/dir

in tcsh, replace .[!.]* with .[^.]*

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ffmpeg -vcodec copy -acodec copy -i orginalfile -ss 00:01:30 -t 0:0:20 newfile

2009-03-16 12:58:07

User: ako

Tags: video ffmpeg video editing codec

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Cut out a piece of film from a file. Choose an arbitrary length and starting time.

With:

-vcodec, you choose what video codec the new file should be encoded with. Run ffmpeg -formats E to list all available video and audio encoders and file formats.

copy, you choose the video encoder that just copies the file.

-acodec, you choose what audio codec the new file should be encoded with.

copy, you choose the audio encoder that just copies the file.

-i originalfile, you provide the filename of the original file to ffmpeg

-ss 00:01:30, you choose the starting time on the original file in this case 1 min and 30 seconds into the film

-t 0:0:20, you choose the length of the new film

newfile, you choose the name of the file created.

Here is more information of how to use ffmpeg:

http://www.ffmpeg.org/ffmpeg-doc.html

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detox -r -s utf_8 /path/to/old/win/files/dir

2009-03-16 07:50:36

User: renich

Tags: ut

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iso-8859-1 to utf-8 safe recursive rename

This command is a powerful "detoxifier" that eliminates special chars, spaces and all those little chars we don't like. It support several "sequences" so be sure to check your /usr/local/etc/detoxrc while at it... and maybe define your own

cat count.txt | awk '{ sum+=$1} END {print sum}'

2009-03-16 00:22:13

User: duxklr

Functions: awk cat

Tags: awk

Up
Down

Using awk to sum/count a column of numbers.

Takes a input file (count.txt) that looks like:

It will add/sum the first column of numbers.

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less textfile.gz

2009-03-15 23:51:17

User: allbad

Functions: less

-4

Up
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Read a gzipped text file directly with less.

There is no need to 'zcat textfile.gz | less' with newer distros. This is useful for reading archived log files without having to extract, read, and zip when done.

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openssl pkcs12 -export -in /dir/CERTIFICATE.pem -inkey /dir/KEY.pem -certfile /dir/CA-cert.pem -name "certName" -out /dir/certName.p12

2009-03-15 23:14:26

User: gadget00

Tags: openssl digital certificate p12 private key S/MIME

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Create a P12 file, using OpenSSL

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less file.tar.gz

2009-03-15 23:00:05

User: allbad

Functions: less

-1

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View the list of files and directories in an archive with less.

This will print out the files and directories in a gzipped tarball.

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rpm -qa --qf '%{SIZE} %{NAME}\n' | sort -nr | nl | head -6 # six largest RPMs

2009-03-15 22:18:17

User: mpb

Functions: head nl rpm sort

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Display 6 largest installed RPMs sorted by size (descending)

Low on disk space? Check the largest installed RPMs for delete canditates.

ls -1 | grep " " | awk '{printf("mv \"%s\" ",$0); gsub(/ /,"_",$0); printf("%s\n",$0)}' | sh # rename filenames: spaces to "_"

2009-03-15 18:42:43

User: mpb

Functions: awk grep ls rename sh

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Convert embedded spaces in filenames to "_" (underscore)

This command converts filenames with embedded spaces in the current directory replacing spaces with the underscore ("_") character.

echo "encryptedpassword"|openssl passwd -1 -stdin

2009-03-15 17:06:50

User: chmouel

Functions: echo passwd

Up
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Generate secure password to userwith chpasswd

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for name in larry moe schemp; do useradd $name; echo 'password' | passwd --stdin $name; chage -d 0 $name; done

2009-03-15 12:02:39

User: atoponce

Functions: chage echo passwd useradd

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Quickly add user accounts to the system and force a password change on first login

This command is a bit Linux specific, as --stdin doesn't exist for passwd on many Unix machines. Further, useradd is high level in most distributions and Unix derivatives except for the Debian family of distros, where adduser would be more appropriate. The last bit, with chage, will force the user to change their password on new login.

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gcal -K -q GB_EN 2009 # display holidays in UK/England for 2009 (with week numbers)

2009-03-15 10:19:52

User: mpb

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Display calendar with specific national holidays and week numbers

NB when you run this gcal command in your shell, holidays are highlighted

but this highlighting does not show in the sample output (above).

To find full details on gcal options: gcal --long-help | less

Example for United States, Pennsylvania:

gcal -K -q US_PA 2009 # display holidays in USA/Pennsylvania for 2009 (with week numbers)

Example for Hong Kong:

gcal -K -q HK 2009 # display holidays in Hong Kong for 2009 (with week numbers)

sort file1.txt | uniq > file2.txt

2009-03-14 20:24:06

User: rain

Functions: sort uniq

Tags: bash Linux

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To have only unique lines in a file

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