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Commands by EBAH

Commands by EBAH from sorted by
Terminal - Commands by EBAH - 16 results
ps axu | grep [a]pache2
2012-12-15 19:37:19
User: EBAH
Functions: grep ps
11
Up
Down
grep processes list avoiding the grep itself

Trick to avoid the form:

grep process | grep - v grep

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awk '{cmd="date --date=\""$1"\" +\"%Y/%m/%d %H:%M:%S\" "; cmd | getline convdate; print cmd";"convdate }' file.txt
2012-02-28 14:08:52
User: EBAH
Functions: awk
Tags: Date manipulation awk date embed
0
Up
Down
awk date convert

Convert readable date/time with `date` command

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sed "s/\s\+/;/g;s/^ //;s/ $//" filename.csv
2011-07-20 08:51:07
User: EBAH
Functions: sed
Tags: sed replace oracle spool fixed size fields
2
Up
Down
Replace multiple spaces with semicolon
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MyVAR=84; awk '{ print "'"$MyVAR"'" }'
2011-04-14 15:49:50
User: EBAH
Functions: awk
Tags: bash awk print
-3
Up
Down
BASH: Print shell variable into AWK
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set colsep "{char}"
2011-04-05 10:48:48
User: EBAH
Functions: set
Tags: oracle
-5
Up
Down
Oracle: set column separator

set colsep "&TAB" -- for tab separator

set colsep "|" -- for pipe separator

etc...

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sed "s/^ *//;s/ *$//;s/ \{1,\}/ /g" filename.txt
2011-03-09 10:35:02
User: EBAH
Functions: sed
Tags: sed
1
Up
Down
Remove multiple spaces

The command removes all the spaces whithin a file and leaves only one space.

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:%s/\s\+$//
2011-02-27 19:44:39
User: EBAH
Tags: vi spaces trim trailing
6
Up
Down
Remove trailing space in vi
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set list / set nolist
2011-02-27 19:38:15
User: EBAH
Functions: set
Tags: hidden vi char
1
Up
Down
show hidden chars in vi
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echo $EPOCH|awk '{print strftime("%c",$1)}'
2011-01-19 15:12:51
User: EBAH
Functions: awk echo
-3
Up
Down
Convert unix timestamp to date
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/usr/bin/truss /usr/bin/date 2>&1 | nawk -F= '/^time\(\)/ {gsub(/ /,"",$2);print $2}'
2011-01-12 16:18:50
User: EBAH
0
Up
Down
Unix timestamp Solaris
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nawk 'BEGIN {print srand()}'
2011-01-12 16:17:59
User: EBAH
Tags: time utc timestamp
0
Up
Down
Unix timestamp Solaris

For Solaris to obtain the same as:

date+%s like in linux

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du -sk * | sort -rn | head
2011-01-03 10:49:40
User: EBAH
Functions: du sort
Tags: size find filesize
2
Up
Down
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

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awk 'BEGIN {FS=","} { print $1 " " $2 " " $NF}' foo.txt
2010-11-12 15:26:04
User: EBAH
Functions: awk
Tags: awk field separator
-1
Up
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AWK: Set Field Separator from command line

Set field separator char from command line.

Prints first, second and lsat columns.

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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
2010-11-05 23:03:48
User: EBAH
Functions: cut echo
Tags: password shadow expiration
0
Up
Down
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.

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cat file.txt | sed -e /<opening tag>/d -e /<closing tag>/G | sed -e '/./{H;$!d;}' -e 'x;/<string to search>/!d;'
2010-11-04 10:31:15
User: EBAH
Functions: cat sed
Tags: grep tag filter multiline
2
Up
Down
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.

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dd if=/dev/zero of=foo.txt bs=1M count=1
2010-10-20 09:36:34
User: EBAH
Functions: dd
5
Up
Down
Create a file of a given size in linux
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