I try to use libvips to compress my gifs, but I can't find the relevant documentation
# vips --version
vips-8.12.2-Tue Jan 25 09:34:32 UTC 2022
This gif is very big, I want to try to compress it with vips
# ls -ahl *.gif
-rw-r--r--. 1 root root 34M 7月 4 10:25 a.gif
Related
I am using gcp vm machine instance N1-standard 8V-30GB and N1-standard 4V-15GB
os-Debian
version - Debian GNU/Linux 10(buster)
this issue i am facing from last 1 month.
public access permission denied is one of message i am seeing while trying to access from cloud shell
I had run command chmod 777 <home directory> earlier.
I've tried to reproduce your steps and was able to solve this issue.
Please have a look at my steps below:
create VM instances:
gcloud compute instances create instance-1 --zone=europe-west3-a --machine-type=e2-medium --image=ubuntu-1804-bionic-v20200701 --image-project=ubuntu-os-cloud
gcloud compute instances create instance-2 --zone=europe-west3-a --machine-type=e2-medium --image=ubuntu-1804-bionic-v20200701 --image-project=ubuntu-os-cloud
change permissions recursively on my home directory at the VM instance instance-1:
instance-1:~$ chmod -R 777 ~
instance-1:~$ ls -la
...
drwxrwxrwx 2 username username 4096 Jul 15 07:50 .ssh
create snapshot of the VM instance instance-1 boot disk:
gcloud compute disks snapshot instance-1 --snapshot-names instance-1-snapshot --zone=europe-west3-a
create a new disk with the snapshot:
gcloud compute disks create instance-1-snapshot-disk --zone=europe-west3-a --source-snapshot=instance-1-snapshot
attach created disk instance-1-snapshot-disk to the VM instance instance-2:
instance-2:~$ ls -l /dev/ | grep sd
brw-rw---- 1 root disk 8, 0 Jul 15 07:39 sda
brw-rw---- 1 root disk 8, 1 Jul 15 07:39 sda1
brw-rw---- 1 root disk 8, 14 Jul 15 07:39 sda14
brw-rw---- 1 root disk 8, 15 Jul 15 07:39 sda15
instance-2:~$ mount | grep sda
/dev/sda1 on / type ext4 (rw,relatime)
/dev/sda15 on /boot/efi type vfat (rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
then
gcloud compute instances attach-disk instance-2 --disk=instance-1-snapshot-disk --zone=europe-west3-a
after that
instance-2:~$ ls -l /dev/ | grep sd
brw-rw---- 1 root disk 8, 0 Jul 15 07:39 sda
brw-rw---- 1 root disk 8, 1 Jul 15 07:39 sda1
brw-rw---- 1 root disk 8, 14 Jul 15 07:39 sda14
brw-rw---- 1 root disk 8, 15 Jul 15 07:39 sda15
brw-rw---- 1 root disk 8, 16 Jul 15 08:04 sdb
brw-rw---- 1 root disk 8, 17 Jul 15 08:04 sdb1
brw-rw---- 1 root disk 8, 30 Jul 15 08:04 sdb14
brw-rw---- 1 root disk 8, 31 Jul 15 08:04 sdb15
instance-2:~$ sudo mkdir /mnt/instance-1-snapshot-disk
instance-2:~$ sudo mount /dev/sdb1 /mnt/instance-1-snapshot-disk
instance-2:~$ ls -la /mnt/instance-1-snapshot-disk
total 104
drwxr-xr-x 23 root root 4096 Jul 15 07:56 .
drwxr-xr-x 3 root root 4096 Jul 15 08:05 ..
drwxr-xr-x 2 root root 4096 Jul 1 19:14 bin
drwxr-xr-x 4 root root 4096 Jul 1 19:19 boot
drwxr-xr-x 4 root root 4096 Jul 1 19:11 dev
drwxr-xr-x 93 root root 4096 Jul 15 07:55 etc
drwxr-xr-x 4 root root 4096 Jul 15 07:50 home
lrwxrwxrwx 1 root root 30 Jul 1 19:18 initrd.img -> boot/initrd.img-5.3.0-1030-gcp
lrwxrwxrwx 1 root root 30 Jul 1 19:18 initrd.img.old -> boot/initrd.img-5.3.0-1030-gcp
drwxr-xr-x 22 root root 4096 Jul 1 19:17 lib
drwxr-xr-x 2 root root 4096 Jul 1 19:01 lib64
drwx------ 2 root root 16384 Jul 1 19:13 lost+found
drwxr-xr-x 2 root root 4096 Jul 1 19:01 media
drwxr-xr-x 2 root root 4096 Jul 1 19:01 mnt
drwxr-xr-x 2 root root 4096 Jul 1 19:01 opt
drwxr-xr-x 2 root root 4096 Apr 24 2018 proc
drwx------ 3 root root 4096 Jul 15 07:36 root
drwxr-xr-x 4 root root 4096 Jul 1 19:19 run
drwxr-xr-x 2 root root 4096 Jul 1 19:17 sbin
drwxr-xr-x 6 root root 4096 Jul 15 07:36 snap
drwxr-xr-x 2 root root 4096 Jul 1 19:01 srv
drwxr-xr-x 2 root root 4096 Apr 24 2018 sys
drwxrwxrwt 7 root root 4096 Jul 15 07:56 tmp
drwxr-xr-x 10 root root 4096 Jul 1 19:01 usr
drwxr-xr-x 13 root root 4096 Jul 1 19:12 var
lrwxrwxrwx 1 root root 27 Jul 1 19:18 vmlinuz -> boot/vmlinuz-5.3.0-1030-gcp
lrwxrwxrwx 1 root root 27 Jul 1 19:18 vmlinuz.old -> boot/vmlinuz-5.3.0-1030-gcp
change permissions:
.ssh directory: 700 drwx------
public key (.pub file): 644 -rw-r--r--
private key (id_rsa): 600 -rw-------
lastly your home directory should not be writeable by the group or others: 755 drwxr-xr-x
instance-2:~$ chmod -R 755 /mnt/instance-1-snapshot-disk/home/username/
instance-2:~$ chmod -R 700 /mnt/instance-1-snapshot-disk/home/username/.ssh/
instance-2:~$ chmod 644 /mnt/instance-1-snapshot-disk/home/username/.ssh/authorized_keys
unmount the disk when you finish:
instance-2:~$ sudo umount /mnt/instance-1-snapshot-disk/
detach disk instance-1-snapshot-disk from the VM instance instance-2:
gcloud compute instances detach-disk instance-2 --disk=instance-1-snapshot-disk --zone=europe-west3-a
create a new instance from the repaired disk:
gcloud compute instances create instance-3 --zone=europe-west3-a --machine-type=e2-medium --disk=name=instance-1-snapshot-disk
check SSH connection to at the VM instance instance-1.
In addition, please have a look at the documentation Troubleshooting SSH section Inspect the VM instance without shutting it down to find more details.
From owner's account i tried to access instance-1 but owner is also not able to connect to the instance-1.
owner of project got this pop-up on ssh window
[1]: https://i.stack.imgur.com/y2fzC.jpg
I observe that in fresh new created instance if i add add some file like git clone repo, after that if i restart it then i am able to connect SSH again.
I have a considerable classical FLAC collection where each album is a directory. I've realized that I have used a sub-optimal structure and need to rename all the directories.
My current naming convention is:
COMPOSER (CONDUCTOR) - NAME OF PIECE
E.g.
"Bach (Celibidache) - Mass in F minor"
I want to change the naming to
COMPOSER - NAME OF PIECE (CONDUCTOR)
I.e.
"Bach - Mass in F minor (Celibidache)"
There are some possible exceptions, the (CONDUCTOR) may be (CONDUCTOR, SOLOIST) and some directories do not have the (CONDUCTOR) part and should be left as is. The NAME OF PIECE can contain all legal letters and symbols.
All albums are located in the same parent directory, so no sub-directories.
What is the easy way to do this?
use perl rename (some distributions have this as rename - Ubuntu and related, some as prename - Fedora and Redhat AFAIK). Check first.
prename -n -- '-d && s/(\(.*\)) - (.*)/- \2 \1/' *
-n don't rename just print the results - remove after you are ok with the results.
-- end of the options, start of the perlexpr and files
-d check that the file is a directory
s/.../.../ - substitution
Example:
[test01#localhost composers]$ ls -la
total 12
drwxrwxr-x 3 test01 test01 4096 Feb 14 12:37 .
drwxrwxr-x. 7 test01 test01 4096 Feb 14 12:23 ..
drwxrwxr-x 2 test01 test01 4096 Feb 14 12:37 'Bach (Celibidache) - Mass in F minor'
-rw-rw-r-- 1 test01 test01 0 Feb 14 12:27 'Bach (Celibidache) - Mass in F minor.flac'
[test01#localhost composers]$ prename -n -- '-d && s/(\(.*\)) - (.*)/- \2 \1/' *
Bach (Celibidache) - Mass in F minor -> Bach - Mass in F minor (Celibidache)
[test01#localhost composers]$ prename -- '-d && s/(\(.*\)) - (.*)/- \2 \1/' *
[test01#localhost composers]$ ls -la
total 12
drwxrwxr-x 3 test01 test01 4096 Feb 14 12:38 .
drwxrwxr-x. 7 test01 test01 4096 Feb 14 12:23 ..
-rw-rw-r-- 1 test01 test01 0 Feb 14 12:27 'Bach (Celibidache) - Mass in F minor.flac'
drwxrwxr-x 2 test01 test01 4096 Feb 14 12:37 'Bach - Mass in F minor (Celibidache)'
Note that without -d both the file and the directory would have been renamed.
Is there a way we can get the time stamp of the files in HDFS to millisecond level.
For example:
in linux we can get the full time stamp like below
$ ls --full-time
total 4
-rw-r--r--. 1 bigdatauser hadoop 0 2017-09-15 01:09:25.068425282 -0400 newfile1.txt
-rwxrwxrwx. 1 bigdatauser hadoop 106 2017-09-15 01:08:16.791844270 -0400 test.sh
If you use hdfs dfs -stat '%Y' you can see the time in milliseconds.
$ hdfs dfs -touchz /tmp/test_file
$ hdfs dfs -stat "%Y" /tmp/test_file
1506621031648
From http://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/FileSystemShell.html#stat:
Print statistics about the file/directory at in the specified format. Format accepts filesize in blocks (%b), type (%F), group name of owner (%g), name (%n), block size (%o), replication (%r), user name of owner(%u), and modification date (%y, %Y). %y shows UTC date as “yyyy-MM-dd HH:mm:ss” and %Y shows milliseconds since January 1, 1970 UTC. If the format is not specified, %y is used by default.
i need your help :) today i trained possitive image and negative image for HAAR detection. I followed this command below :
opencv_traincascade -data classifier -vec samples.vec -bg negatives.txt\ -numStages 20 -minHitRate 0.999 -maxFalseAlarmRate 0.5 -numPos 1000\ -numNeg 600 -w 80 -h 40 -mode ALL -precalcValBufSize 1024\ -precalcIdxBufSize 1024
(from CodingRobin) on my terminal, it seems "Done".
But there's no .vec files in samples directory. Can anyone help me ??
opencv_traincascade.exe USES the vec file. You must call the opencv_createsamples.exe instead.
The command line should look like:
opencv_createsamples.exe -info positives.txt -vec samples.vec -w 24 -h 24 -num 4455
for your number of samples and width/height
positives.txt should look like (each line):
#path #numberOfObjects #xObj1 #yObj1 #widthObj1 #heightObj1 #xObj2 #...
for example:
image1.png 1 0 0 84 84
image2.jpg 1 100 130 128 128
image3.png 2 10 30 50 50 300 100 101 101
etc.
After that you can train by calling opencv_traincascade with your parameter list and you'll get a .xml file as result.
$./configure --prefix ${HOME}/ocsigen OCSIGEN_USER=${USER} OCSIGEN_GROUP=${USER} --with-missing-libs
...
checking for sqlite3_open in -lsqlite3... no
configure: error: SQLite is required. See the --with-sqlite3 configure option.
$uname -r
[FreeBSD[ 9.0-RELEASE-p3
$whereis sqlite3
sqlite3: /usr/local/bin/sqlite3
$ls -l /usr/local/lib/libsqlite*
-rw-r--r-- 1 root wheel 602092 12 3 2011 /usr/local/lib/libsqlite3.a
-rwxr-xr-x 1 root wheel 943 12 3 2011 /usr/local/lib/libsqlite3.la*
lrwx-rw-r--r-- 1 root wheel 602092 12 3 2011 /usr/local/lib/libsqlite3.a
-rwxr-xr-x 1 root wheel 943 12 3 2011 /usr/local/lib/libsqlite3.la*
lrwxr-xr-x 1 root wheel 15 12 3 2011 /usr/local/lib/libsqlite3.so# -> libsqlite3.so.8
-rwxr-xr-x 1 root wheel 617995 12 3 2011 /usr/local/lib/libsqlite3.so.8*
Any suggestion is appreciated!
I think you can use something like
./configure --with-sqlite3=/usr/local/lib
or maybe just /usr/local to tell the ./configure script that sqlite3 is not in the standard directory (/usr/lib).