Commands by ebah80

Commands by ebah80 (17)

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Windows telnet

Check if TCP port is reacheable Show Sample Output
This is sample output - yours may be different.
```
ComputerName     : ecample.com
RemoteAddress    : 192.168.1.59
RemotePort       : 443
InterfaceAlias   : SRV-37
SourceAddress    : 192.168.1.10
TcpTestSucceeded : True
```
2

Test-NetConnection -ComputerName example.com -Port 443

ebah80 · 2021-09-16 16:11:04 263

grep processes list avoiding the grep itself

Trick to avoid the form: grep process | grep - v grep Show Sample Output

ps axu | grep [a]pache2

ebah80 · 2012-12-15 19:37:19 34

awk date convert

Convert readable date/time with `date` command Show Sample Output
This is sample output - yours may be different.
```
date --date="Mon Feb 27 12:06:58 2012" +"%Y/%m/%d %H:%M:%S";2012/02/27 12:06:58
date --date="Mon Feb 27 12:11:15 2012" +"%Y/%m/%d %H:%M:%S";2012/02/27 12:11:15
date --date="Mon Feb 27 12:12:47 2012" +"%Y/%m/%d %H:%M:%S";2012/02/27 12:12:47
```
1

awk '{cmd="date --date=\""$1"\" +\"%Y/%m/%d %H:%M:%S\" "; cmd | getline convdate; print cmd";"convdate }' file.txt

ebah80 · 2012-02-28 14:08:52 46
Replace multiple spaces with semicolon
This is sample output - yours may be different.
2

sed "s/\s\+/;/g;s/^ //;s/ $//" filename.csv

ebah80 · 2011-07-20 08:51:07 4
BASH: Print shell variable into AWK
This is sample output - yours may be different.
-3

MyVAR=84; awk '{ print "'"$MyVAR"'" }'

ebah80 · 2011-04-14 15:49:50 5
Oracle: set column separator

set colsep "&TAB" -- for tab separator set colsep "|" -- for pipe separator etc...
This is sample output - yours may be different.
-5

set colsep "{char}"

ebah80 · 2011-04-05 10:48:48 5
Remove multiple spaces

The command removes all the spaces whithin a file and leaves only one space. Show Sample Output
This is sample output - yours may be different.
```
Original: AAA   AAA AAA
After sed: AAA AAA AAA
```
1

sed "s/^ *//;s/ *$//;s/ \{1,\}/ /g" filename.txt

ebah80 · 2011-03-09 10:35:02 11
Remove trailing space in vi
This is sample output - yours may be different.
6

:%s/\s\+$//

ebah80 · 2011-02-27 19:44:39 7
show hidden chars in vi
This is sample output - yours may be different.
1

set list / set nolist

ebah80 · 2011-02-27 19:38:15 8
Convert unix timestamp to date
This is sample output - yours may be different.
-3

echo $EPOCH|awk '{print strftime("%c",$1)}'

ebah80 · 2011-01-19 15:12:51 9
Unix timestamp Solaris
This is sample output - yours may be different.
0

/usr/bin/truss /usr/bin/date 2>&1 | nawk -F= '/^time/ {gsub(/ /,"",$2);print $2}'

ebah80 · 2011-01-12 16:18:50 39
Unix timestamp Solaris

For Solaris to obtain the same as: date+%s like in linux
This is sample output - yours may be different.
0

nawk 'BEGIN {print srand()}'

ebah80 · 2011-01-12 16:17:59 20
Find the biggest files

Also: * find . -type f -exec ls -s {} \; | sort -n -r | head -5 * find . -type f -exec ls -l {} \; | awk '{print $5 "\t" $9}' | sort -n -r | head -5
This is sample output - yours may be different.
4

du -sk * | sort -rn | head

ebah80 · 2011-01-03 10:49:40 20
AWK: Set Field Separator from command line

Set field separator char from command line. Prints first, second and lsat columns. Show Sample Output
This is sample output - yours may be different.
```
Input:
Col1,Col2,Col3,[...],ColLast

Output:
Col1 Col2 ColLast
```
-1

awk 'BEGIN {FS=","} { print $1 " " $2 " " $NF}' foo.txt

ebah80 · 2010-11-12 15:26:04 5
Days left before password expires

This works only with GNU date. In solaris the command: date +%s doesn't work. You can try using the following instead: nawk 'BEGIN {print srand()}' should give the same output as date +%s under Solaris. Show Sample Output
This is sample output - yours may be different.
```
15

or

99516

The lastter one means that the password never expire.
```
0

let NOW=`date +%s`/86400 ; PASS_LAST_CHANGE=`grep $USER /etc/shadow | cut -d: -f3` ; PASS_LIFE=`grep $USER /etc/shadow | cut -d: -f5`; DAYS_LEFT=$(( PASS_LAST_CHANGE + PASS_LIFE - NOW)) ; echo $DAYS_LEFT

ebah80 · 2010-11-05 23:03:48 8
Multi line grep using sed and specifying open/close tags

Working with log files that contains variable length messages wrapped between open and close tags it may be useful to filter the messages upon a keyword. This works fine with GNU sed version 4.2 or higher, so pay attention to some unix distros (solaris, hp-ux, etc.). Linux should be ok. Show Sample Output
This is sample output - yours may be different.
```
The command:
cat file.txt | sed -e /^$/d -e /++-/G | sed -e '/./{H;$!d;}' -e 'x;/Lorem/!d;'

Will print the message:

^$
Lorem ipsum dolor sit amet,
consectetur adipiscing elit.
++-

But not:

^$
Vestibulum fermentum molestie nunc a interdum.
++-
```
2

cat file.txt | sed -e /<opening tag>/d -e /<closing tag>/G | sed -e '/./{H;$!d;}' -e 'x;/<string to search>/!d;'

ebah80 · 2010-11-04 10:31:15 6
Create a file of a given size in linux
This is sample output - yours may be different.
5

dd if=/dev/zero of=foo.txt bs=1M count=1

ebah80 · 2010-10-20 09:36:34 4

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Download an entire website from a specific folder on down

Rename files in batch

list directories only

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Console clock

Shows a simple clock in the console -t param removes the watch header Ctrl-c to exit

Puts every word from a file into a new line

Simply translates whitespace to newlines. Could be enhanced to compress out extra newlines, but that might be better handled in the next tool down the pipe, with eg uniq(1).

Print stack trace of a core file without needing to enter gdb interactively

The pstack command prints a stack trace of running processes without needing to attach a debugger, but what about core files? The answer, of course, is to use this command. Usage: gdbbt program corefile

backup your playstation game using rip

Create a mirror of a local folder, on a remote server

Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

cut audio file

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