Hi all,
I know how to count lines, count byte of a file, but really dont know how to compare line , I am newbie and hope you can help me to learn more about UNIX.
Here is my problem.
====
How :
1. File A (Flatfile with NAME|DATE|ID1|ID2|ID3|ID4|ID5)... (3 Replies)
Hi,
I am a newbie to shell scripting. here is my objective:
1)The shell program should take 2 parameters - ie-> DestinationFolder, WebFolder
2)Destination folder contains few files that has to has be verified and deleted.
3)WebFolder is a folder containing a list of master files
4)It... (1 Reply)
Hi,
I have a dir in which I need to check for 3 files. and naming for three files are as below.
fileone_yyyy_mm_dd.dat
filetwo_yyyy_mm_dd.dat
filethree_yyyy_mm_dd.datand YYYY_mm_dd will change everyday as the date changes. I need to check everyday all these files are existing or not... (4 Replies)
Hi,
I am new to shell scripting.Please help me on this.I am using solaris 10 OS and shell i am using is
# echo $0
-sh
My requirement is i have source file say makefile.I need to extract files with extensions (.c |.cxx |.h |.hxx |.sc) from the makefile.after doing so i need to check whether... (13 Replies)
Hi Experts,
I am checking how to get day in Perl.
If it is “Monday” I need to process…below is the pseudo code.
Can you please prove the code for below condition.
if (today=="Monday" )
{
while (current_time LESS THAN 9:01 AM)
... (1 Reply)
Hi all,
I have 2 files in which i have to find commom entries in column 1 an dif soemthing is common write other data of both files in front of it mentioned.
Gene symbol and disease name
column 1 column2
ARFGEF2 CAD
DDEF2 CAD
PSCD3 CAD
PSCD4 CAD
CAMK1... (15 Replies)
Hi,
I have to check the files in another server using sftp to do that, below is the code i am going with
#!/bin/bash
export SRC_FOLDER=$1
export ARC_FOLDER=$2
HOST=as07u3456
USER=relfag
sftp ${USER}@${HOST} <<EOF
cd $SRC_FOLDER/DSCOR
ls
bye
EOF
echo "done"
whatever the files i... (8 Replies)
unzip -v gives CRC info of each file in a zip(in my case .EAR) file.
# unzip -v my-application.ear
Archive: my-application.ear
Length Method Size Cmpr Date Time CRC-32 Name
-------- ------ ------- ---- ---------- ----- -------- ----
197981 Defl:N 183708 7%... (1 Reply)
For the first time in the history of the site Google Search Console (GSC) has unix.com showing "no mobile viewability errors". This is no small achievement considering the hundreds of thousand of lines of legacy code we run at a site which has been around much longer than Facebook or LinkedIn:
... (0 Replies)
Discussion started by: Neo
0 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)