03-18-2010
Quote:
Originally Posted by
RacerX
It almost works after a bit of debugging: a missing semi-colon after s=$0
That's not a bug. It's is the behaviour of awk, if you have more commands on
one line, they must be separated by a semicolon.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
why a minus sign is put for options in unix commands
suggestions plz (2 Replies)
Discussion started by: trichyselva
2 Replies
2. UNIX for Dummies Questions & Answers
my file looks like this:
101928 101943
101928 101944
101929 101943
101929 101943
101929 102044
i want to insert bc to get answer like this:
101928 101943 000015
101928 101944 000016
101929 101943 000013
101929 101943 000014
101929 102044 000115
total 000173
my... (3 Replies)
Discussion started by: tjmannonline
3 Replies
3. Shell Programming and Scripting
Hello people,
awk '{print $0}' input1.txt input2.txt |sort -u
Will give the union of the 2 files. Similarly what is command to get just the diff data (i.e minus) of the 2 files. Can I use the "diff" command to get just the diff data.
Please let me know.
Regards,
Tipsy. (7 Replies)
Discussion started by: tipsy
7 Replies
4. Shell Programming and Scripting
File 1 contains data :
CALL_ID
SOR_ID
SEG_SEQ_NUM
CHK_PNT_MENU_TYPE_CD
PTNR_ID
ACTVN_RTRN_CD
PRIM_ACTVN_DCLN_REAS_CD
SCNDRY_ACTVN_DCLN_REAS_CD
ACTVN_SCCS_IND
CARD_ACTVTD_IND
MAX_ACTVN_FAILD_ATMP_IND
EDW_PUBLN_ID
File 2 contains data:
PRIM_ACTVN_DCLN_REAS_CD... (3 Replies)
Discussion started by: ysvsr1
3 Replies
5. Shell Programming and Scripting
Hi there,
I have a problem with arithmetic ops in awk.
Here is what my script does right now.
while read nr val ; do
case $nr in
400) awk '$2~/eigenvectors/ {print $NF-'$val'};' input.txt >> output.txt;;
esac
done < frames.txtI have a file named frames.txt with two columns (nr and... (2 Replies)
Discussion started by: tobias1234
2 Replies
6. UNIX for Dummies Questions & Answers
Hi,
I need to subtract 5 minutes from the date. Example
$date +"%Y-%m-%d-%H.%M.%S" displays 2014-06-26-06.06.38
I want to show it as 2014-06-26-06.01.38 (5 mins are subtracted from date)
Any help would be appreciated. I am currently on AIX version 6.1
-Vrushank (10 Replies)
Discussion started by: vrupatel
10 Replies
7. Shell Programming and Scripting
Hi the below code is failing i am trying to generate do the following:
2014-10-22 11:26:00 (Substract 24 hrs)
should produce
2014-10-21 11:26:00
I need the same formatting below because that gets inputted into code for an... (4 Replies)
Discussion started by: Samuel12
4 Replies
8. Shell Programming and Scripting
I have a specific set (all ending with .bam) of downloaded files in a directory /home/cmccabe/Desktop/NGS/API/2-15-2016. What I am trying to do is use a match to $2 in name to rename the downloaded files. To make things a more involved the date of the folder is unique and in the header of name... (1 Reply)
Discussion started by: cmccabe
1 Replies
9. Shell Programming and Scripting
Hello,
date --date '-60 min ago' +'%Y-%m-%d %H:%M:%S,%3N'
Above command gives the date and time minus 60 minutes
but the problem i am facing is, i do not want to hardcode the value 60
it is stored in a variable var=60
now if i run below command , i get error
date --date '-$var min... (3 Replies)
Discussion started by: Ramneekgupta91
3 Replies
10. Shell Programming and Scripting
Hello Folks,
I have a variable output holding date as below -
output = "20141220"
I need to extract a day out of it and store it in another variable i.e. something similar to below -
output1=20141219"
and if the month is changing i.e. date in on 31st or 1st it should be taken care of
"date... (5 Replies)
Discussion started by: ektubbe
5 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS
--debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.16.3 2010-06-11 SHELL-QUOTE(1)