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shell bash iterate number range with for loop
This is sample output - yours may be different.
3

for i in {1..10}; do echo $i; done

bakhru · 2019-07-28 01:09:35 0
Which processes are listening on a specific port (e.g. port 80)
This is sample output - yours may be different.
-1

netstat -nap|grep 80|grep LISTEN

bakhru · 2019-07-28 01:08:45 0
shell bash iterate number range with for loop
This is sample output - yours may be different.
1

rangeBegin=10; rangeEnd=20; for ((numbers=rangeBegin; numbers<=rangeEnd; numbers++)); do echo $numbers; done

forouharid · 2019-07-27 21:04:27 0
Open browser from terminal to create PR after pushing something in Git in MAC
This is sample output - yours may be different.
1

git remote -v |grep origin|tail -1|awk '{print $2}'|cut -d"@" -f2|sed 's/:/\//g'|xargs -I {} open -a "Google Chrome" https://{}

supratim · 2019-07-26 18:15:11 0
shell bash iterate number range with for loop

iterating range of numer with for loop in shell or bash Show Sample Output
This is sample output - yours may be different.
```
10
11
12
13
14
15
16
17
18
19
20
```
-1

rangeBegin=10; rangeEnd=20; for numbers in $(eval echo "{$rangeBegin..$rangeEnd}"); do echo $numbers;done

aysadk · 2019-07-26 09:19:44 1
bash test check validate if variable is number

to test check if given variable is a digit / number Show Sample Output
This is sample output - yours may be different.
```
error: Not a number
```
1

varNUM=12345; re='^[0-9]+$'; if ! [[ $varNUM =~ $re ]] ; then echo "error: Not a number"; fi

aysadk · 2019-07-26 09:15:37 1
iso to USB with dd and show progress status

Does the same but shows nicely progress in real time with correct Size in %. But also needs the packages sudo,dd,pv and dialog.
This is sample output - yours may be different.
0

image="file.iso";drive="/dev/null";sudo -- sh -c 'cat '"${image}"'|(pv -n -s $(stat --printf="%s" '"${image}"')|dd of='"${drive}"' obs=1M oflag=direct) 2>&1| dialog --gauge "Writing Image '"${image}"' to Drive '"${drive}"'" 10 70 7'

fries · 2019-07-25 11:11:45 0
Pull multiple repositories in child folders (a.k.a. I'm back from leave script) [Windows]
This is sample output - yours may be different.
-1

gci -Directory | foreach {Push-Location $_.Name; git fetch --all; git checkout master; git pull; Pop-Location}

RaphHaddad · 2019-07-22 06:26:03 0
Stage all files for commit except those that are *.config at any level within your git repo [Windows]
This is sample output - yours may be different.
0

git status | Where-Object {$_.Contains('modified') -and !$_.Contains('.config')} | ForEach-Object { git add $_.Replace('modified:','').Trim() }

RaphHaddad · 2019-07-22 06:25:45 0
Copy current branch to clipboard [Windows]
This is sample output - yours may be different.
0

(git branch | Where-Object { $_.Contains('*') } | Select-Object -First 1).Trim('*').Trim() | Set-Clipboard

RaphHaddad · 2019-07-22 06:25:23 0
Delete all local branches that are not master [Windows]
This is sample output - yours may be different.
0

git branch | Where-Object { !$_.Contains('master') } | ForEach-Object { git branch -D $_.Trim() }

RaphHaddad · 2019-07-22 06:25:09 0
Delete all local branches that have been merged into master [Windows]
This is sample output - yours may be different.
-1

git branch --merged origin/master | Where-Object { !$_.Contains('master') } | ForEach-Object { git branch -d $_.trim() }

RaphHaddad · 2019-07-22 06:24:55 0
Initialise git in working directory with latest Visual Studio .gitignore [Windows]
This is sample output - yours may be different.
-1

git init; (Invoke-WebRequest https://raw.githubusercontent.com/github/gitignore/master/VisualStudio.gitignore -UseBasicParsing).Content | Out-File -FilePath .gitignore -Encoding utf8; git add -A

RaphHaddad · 2019-07-22 06:24:33 0
Line Separator That is Width of Terminal

Creates a line seperator that will be the width of your window. Show Sample Output
This is sample output - yours may be different.
```
???? CL test                                                                                         
============================================== test ==============================================
```
1

CL () { WORDS=$@; termwidth="$(tput cols)"; padding="$(printf '%0.1s' ={1..500})"; printf '%*.*s %s %*.*s\n' 0 "$(((termwidth-2-${#WORDS})/2))" "$padding" "$WORDS" 0 "$(((termwidth-1-${#WORDS})/2))" "$padding"; }

Sabz69 · 2019-07-20 20:39:10 2
pretty print json block that has quotes escaped
This is sample output - yours may be different.
0

echo 'json_here' | sed 's/\\//g' | jq .

jgleeson · 2019-07-19 16:26:48 0
Download certificate chain from FTP
This is sample output - yours may be different.
0

echo | openssl s_client -showcerts -connect ftp.domain.com:ftp -starttls ftp 2>/dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p'

Raboo · 2019-07-19 12:30:48 0
Download certificate from FTP
This is sample output - yours may be different.
0

echo | openssl s_client -servername ftp.domain.com -connect ftp.domain.com:21 -starttls ftp 2>/dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p'

Raboo · 2019-07-19 12:30:19 0
Create backup copy of file, adding suffix of the date of the file modification (NOT today's date)

When I go to change a configuration file I always like to make a backup first. You can use "cp -p" to preserve the modification time, but it gets confusing to have file.prev, file.prev2, etc. So I like to add a YYMMDD suffix that shows when the file was last changed. "stat -c %Y" gives you the modification time in epoch seconds, then "date -d @" converts that to whatever format you specify in your "+format" string. Show Sample Output
This is sample output - yours may be different.
```
# ls -l
-rw-r--r-- 1 root root 0 Dec 31  2018 file
# cp -p file file.$(date -d @$(stat -c '%Y' file) "+%y%m%d")
 ls -l
-rw-r--r-- 1 root root 0 Dec 31  2018 file
-rw-r--r-- 1 root root 0 Dec 31  2018 file.181231
 
```
3

cp file file.$(date -d @$(stat -c '%Y' file) "+%y%m%d")

dmmst19 · 2019-07-18 18:09:09 0
Bash function that saves bash functions to file from shell session

The simpler, 1-arg version is save_function(){ { date +"# %F.%T $1; declare -f "$1";}| tee -a ~/.bash_functions; }` Show Sample Output
This is sample output - yours may be different.
```
$ save_function save_function
# 2019-07-16.18:03:57 save_function
save_function ()
{
    while [[ $# > 0 ]]; do
        {
            date +"# %F.%T $1";
            declare -f "$1"
        } | tee -a ~/.bash_functions;
        shift;
    done
}
```
2

save_function(){ while [[ $# > 0 ]]; do { date +"# %F.%T $1; declare -f "$1";}| tee -a ~/.bash_functions; shift; done;}

mcint · 2019-07-17 01:06:59 0
Trim disk image for best compression before distributing

fstrim is usually used on SSDs but can also be used to remove useless bits from file system images. This is most helpful if the compressed disk image is intended to be distributed, since it will be smaller than an untrimmed compressed image. Show Sample Output
This is sample output - yours may be different.
```
disk/: 1.1 GiB (1185869824 bytes) trimmed
```
0

kpartx -av disk.img && mkdir disk && mount /dev/mapper/loop0p1 disk && fstrim -v disk && umount disk && kpartx -d disk.img

stinkerweed999 · 2019-07-16 23:54:13 0
Manually trim SSD

Trims left over file system data from SSD. This can be set as a mount option, but then IO performance decreases. I prefer to trim in a batch either on boot or every few weeks. Show Sample Output
This is sample output - yours may be different.
```
/: 372 GiB (399476387840 bytes) trimmed
```
0

sudo fstrim -v /

stinkerweed999 · 2019-07-16 23:41:56 0
Watch TCP, UDP open ports in real time with socket summary.
This is sample output - yours may be different.
2

watch ss -stplu

wuziduzi · 2019-07-16 20:41:36 0
Debug pytest failures in the terminal

pudb is an ncurses debugger. This command will allow interactive debugging of test failures in pytest using pudb.
This is sample output - yours may be different.
0

pytest --pdbcls pudb.debugger:Debugger --pdb --capture=no

malathion · 2019-07-14 02:54:59 0
generate random mac-address using md5sum + sed

Show Sample Output
This is sample output - yours may be different.
```
$ date | md5sum | sed -r 's/(..){3}/\1:/g;s/\s+-$//'
78:3a:dc:2a:9c:df
```
1

date | md5sum | sed -r 's/(..){3}/\1:/g;s/\s+-$//'

acavagni · 2019-07-13 10:39:21 0
Visual alert with keyboard LEDs
This is sample output - yours may be different.
0

for a in $(seq 16); do xdotool key Num_Lock;sleep .5; xdotool key Caps_Lock;done

knoppix5 · 2019-07-11 23:47:20 0
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Delete all but the latest 5 files

yes 6 (tail from 6th line)

Monitor RAID IO Usage

Shows the IO of the raid sync

list files recursively by size

Symlink all files from a base directory to a target directory

Simple and easy to remember, if it already exists then it just ignores it.

Print number of mb of free ram

open a seperate konsole tab and ssh to each of N servers (konsole 4.2+)

creates a new tab for each of N servers in listofservers.txt and ssh's to said servers then, try the "send to all sessions" feature of konsole to do the same work on all servers at the same time. BIG time saver, but be careful!

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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" }

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