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List SAN Domains for a certificate Show Sample Output

echo | openssl s_client -connect google.com:443 2>&1 | openssl x509 -noout -text | awk -F, -v OFS="\n" '/DNS:/{x=gsub(/ *DNS:/, ""); $1=$1; print $0}'

shadyabhi · 2020-04-10 06:56:51 14

Monitor ETA using pv command

You can get an approximate idea of how long your data export might take. Show Sample Output
This is sample output - yours may be different.
```
[==================================>  ] 60% ETA 0:00:01
```
0

mysqldump --login-path=mypath sbtest sbtest4 | pv --progress --size 200m -t -e -r -a > dump.sql

shantanuo · 2020-03-30 09:15:16 33
List only empty directories and delete safely (=ask for each)

Will delete empty directories and sub-directories (hideen too = whose names are starting with dot .). Used 'rm' command instead of 'rmdir' to give the possibility of asking for confirmation before deleting i.e. it is not wise do delete all empty directories in /etc folder. Replace dot in 'find .' with any for other starting directory instead of current. in 'rm -i -R' 'i' stands for ask before delete and 'R' for delete folder recursively or folder itself if it is empty
This is sample output - yours may be different.
0

find . -type d -empty -exec rm -i -R {} \;

knoppix5 · 2020-03-29 13:12:21 14
find all executable files across the entire tree

I can think of using this command after compiling an downloaded source from anywhere as an easy way to find all executable products. We usually issue the find command (without arguments) to list the full paths of all directories and sub-directories and files in the entire current tree. Similar command is tree -aicfnF
This is sample output - yours may be different.
1

find -executable -type f

knoppix5 · 2020-03-29 11:46:18 18

Remove all cached images for icons related to your profile

Run inside Command Prompt (cmd.exe) as admin. Note that you must close explorer.exe first, and even so some files will not be deleted, will say "Access is denied." To definitely delete them enter with another admin user or from other operating system and access the drive. Show Sample Output

DEL /F /S /Q /A %LocalAppData%\Microsoft\Windows\Explorer\thumbcache_*.db

bugmenot · 2020-03-27 16:53:23 15

List packages manually installed with process currently running

Sometimes we install programs, we forget about them, and they stay there wasting RAM. This one-liner try to find them. Show Sample Output
This is sample output - yours may be different.
```
atom
virtualbox
bluez
mosquitto
teamviewer
```
1

ps -eo cmd | awk '{print $1}'| sort -u | grep "^/" | xargs dpkg -S 2>/dev/null | awk -F: '{print $1}' | sort -u | xargs apt-mark showmanual

pabloab · 2020-03-26 06:16:45 16
convert raw camera image to jpeg

raw image created by canon digital camera. Install using apt-get install ufraw
This is sample output - yours may be different.
0

for i in *.CR2; do ufraw-batch $i --out-type=jpeg --output $i.jpg; done;

shantanuo · 2020-03-22 03:08:23 17
Calculate pi to an arbitrary number of decimal places
This is sample output - yours may be different.
3

bc -l <<< "scale=1000; 4*a(1)"

cryptology_codes · 2020-03-11 15:58:21 12
Create POSIX tar archive

tar(1) and cpio(1) are not fully platform agnostic, although their file formats are specified in POSIX.1-2001. As such, GNU tar(1) might not be able to extract a BSD tar(1) archive, and ivce versa. pax(1) is defined in POSIX.1-2001. To extract an archive: pax -rf archive.tar
This is sample output - yours may be different.
2

pax -wf archive.tar /path

atoponce · 2020-03-06 13:56:46 8
Backup with versioning
This is sample output - yours may be different.
0

& 'C:\cwRsync_5.5.0_x86_Free\bin\rsync.exe' --force --ignore-errors --no-perms --chmod=ugo=rwX --checksum --delete --backup --backup-dir="_EVAC/$(Get-Date -Format "yyyy-MM-dd-HH-mm-ss")" --whole-file -a -v "//MyServer/MyFolder" "/cygdrive/c/Backup"

pascalv · 2020-03-06 10:17:42 9
Linux system calls of MySQL process
This is sample output - yours may be different.
0

strace -c -p $(pidof -s mysqld) -f -e trace=all

shantanuo · 2020-02-27 03:35:17 36
mysql status

cron entry to record mysql status every minute
This is sample output - yours may be different.
0

mysqladmin status >> /home/status.txt 2>> /home/status_err.txt

shantanuo · 2020-02-19 10:58:27 16
add a mysql user

username is dba and password is dba123
This is sample output - yours may be different.
0

grant all on *.* to 'dba'@'localhost' identified by 'dba123' with grant option;

shantanuo · 2020-02-19 10:56:07 10
find and remove old compressed backup files

remove all compressed files in /home/ folder not created in the last 10 days
This is sample output - yours may be different.
1

find /home -type f $ -name "*.sql.gz" -o -name "*.tar.gz" -mtime +10 $ -exec rm -rf {} \;

shantanuo · 2020-02-19 10:49:28 14
find and remove old backup files

remove all files in /home/ folder that starts with bk_all_dbProdSlave and not created in the last 2 days
This is sample output - yours may be different.
0

find /home/ -name bk_all_dbProdSlave_\* -mtime +2 -exec rm -f {} \;

shantanuo · 2020-02-19 10:47:34 9
InnoDB related parameters
This is sample output - yours may be different.
0

mysqladmin variables | egrep '(innodb_log_file|innodb_data_file)'

shantanuo · 2020-02-19 10:24:52 10
mysql backup utility
This is sample output - yours may be different.
0

mysqlbackup --port=3306 --protocol=tcp --user=dba --password=dba --with-timestamp --backup-dir=/tmp/toback/ --slave-info backup-and-apply-log --innodb_data_file_path=ibdata1:10M:autoextend --innodb_log_files_in_group=2 --innodb_log_file_size=5242880

shantanuo · 2020-02-19 10:24:15 9
port forwarding

pem file used by AWS servers for additional security
This is sample output - yours may be different.
1

ssh -L8888:localhost:80 -i nov15a.pem [email protected]

shantanuo · 2020-02-19 10:20:18 9
check mysql capacity to handle traffic
This is sample output - yours may be different.
-1

mysqlslap --query=/root/select_query_cp.sql --concurrency=10 --iterations=5 --create-schema=cvts1

shantanuo · 2020-02-15 10:40:39 8
show the difference
This is sample output - yours may be different.
2

diff file1 file2 --side-by-side --suppress-common-lines

shantanuo · 2020-02-15 10:38:44 31
Change values from 0 to 100
This is sample output - yours may be different.
0

awk '{if ($3 =="LAN" && $5 == "0.00" ) print $1, $2, "LAN", "288", "100.00"; else print $1 ,$2, $3, $4, $5 }' sla-avail-2013-Feb > sla-avail-2013-Feb_final

shantanuo · 2020-02-15 10:37:44 7
Extract queries from mysql general log

queries related to table 'Invoice_template' Show Sample Output
This is sample output - yours may be different.
0

grep -Eo '( *[^ ]* *){4}Invoice_Template( *[^ ]* *){4}' /mysql-bin-log/mysql-gen.log | head -10000 | sort -u

shantanuo · 2020-02-14 08:18:58 6
Slow Down Command Output

( Or ls -lat|lolcat -a if you like it in technicolor - apt install lolcat if needed )
This is sample output - yours may be different.
2

ls -alt|awk '{if (system("sleep .5 && exit 2") != 2) exit; print}'

knoppix5 · 2020-02-13 02:59:48 5
rsync should continue even if connection lost

Manage partial uploads using append option.
This is sample output - yours may be different.
1

rsync --archive --recursive --compress --partial --progress --append [email protected]:/backup/somefile.txt.bz2 /home/ubuntu/

shantanuo · 2020-02-11 13:48:22 5
rsync using pem file

Especially useful while syncing to Amazon EC2 instance. avz stands for archive verbose compress
This is sample output - yours may be different.
0

rsync -e 'ssh -i /root/my.pem' -avz /mysql/db/data_summary.* ec2-1-2-4-9.compute-1.amazonaws.com:/mysql/test/

shantanuo · 2020-02-11 13:45:32 7
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Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

find all executable files across the entire tree

I can think of using this command after compiling an downloaded source from anywhere as an easy way to find all executable products. We usually issue the $ find command (without arguments) to list the full paths of all directories and sub-directories and files in the entire current tree. Similar command is $ tree -aicfnF

Clean all .pyc files from current project. It cleans all the files recursively.

Sort a character string

Sorts a character string, using common shell commands.

ubuntu easter eggs

Restrict the use of dmesg for current user/session

Linux offers an interesting option to restrict the use of dmesg. It is available via /proc/sys/kernel/dmesg_restrict. You can check the status with: $ cat /proc/sys/kernel/dmesg_restrict Alternatively you can use sysctl: $ sudo sysctl -w kernel.dmesg_restrict=1 To make your change persistent across reboot, edit a fille in /etc/sysctl.d/.

display typedefs, structs, unions and functions provided by a header file

will display typedefs, structs, unions and functions declared in 'stdio.h'(checkout _IO_FILE structure). It will be helpful if we want to know what a particular header file will offer to us. Command 'cpp' is GNU's C Preprocessor.

Quickly build ulimit command from current values

It is helpful to know the current limits placed on your account, and using this shortcut is a quick way to figuring out which values to change for optimization or security. Alias is: $ alias ulimith="command ulimit -a|sed 's/^.*$[a-z]$)$.*$$/-\1\2/;s/^/ulimit /'|tr '\n' ' ';echo" Here's the result of this command: $ ulimit -c 0 -d unlimited -e 0 -f unlimited -i 155648 -l 32 -m unlimited -n 8192 -p 8 -q 819200 -r 0 -s 10240 -t unlimited -u unlimited -v unlimited -x unlimited $ ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 155648 max locked memory (kbytes, -l) 32 max memory size (kbytes, -m) unlimited open files (-n) 8192 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 10240 cpu time (seconds, -t) unlimited max user processes (-u) unlimited virtual memory (kbytes, -v) unlimited file locks (-x) unlimited

Docker.io Stop and Remove all processes

Will stop all running containers, then remove all containers **This isn't for selectively handling containers, it removes everything**

Find the files that contain a certain term

Simple use of find and grep to recursively search a directory for files that contain a certain term.

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