02-14-2017
Quote:
Originally Posted by
joeyg
Unsure on what part of that sript makes it continuously read. The code snippet seems to be a one-time pass-thru.
tail -f
This User Gave Thanks to Corona688 For This Post:
10 More Discussions You Might Find Interesting
1. AIX
Hi,
I am trying to find the content of file using grep and find command and list only the file names
but i am getting entire file list of files in the directory
find . -exec grep "test" {} \; -ls
Can anyone of you correct this (2 Replies)
Discussion started by: madhu_Jagarapu
2 Replies
2. Shell Programming and Scripting
Hi ,
I have a file called "X" . the content of X are
X
--
abc
def
and i have a file called "Y" , the content of Y are
Y
--
erty
sdss
s
abc
sfs
def
I need to check if the content of file X is contained in Y.Only unix (7 Replies)
Discussion started by: giri_luck
7 Replies
3. Shell Programming and Scripting
Hi, I have a file called fl_list consists of files i have to archive. I want to create a exception parm called except_parm, so if it finds the directory it will not archive these files and remove from fl_list.
$ cat fl_list
/apps/dev/ihub/ready/IA003B/IA003B_Deal_Header_yyyymmdd_hhmmss.txt... (1 Reply)
Discussion started by: k9cheung
1 Replies
4. Shell Programming and Scripting
My input file:
>sequence_1
ASSSSSSSSSSSDDDDDDDDDDDCCCCCCC
ASDSFDFFDFDFFWERERERERFSDFESFSFD
>sequence_2
ASDFDFDFFDDFFDFDSFDSFDFSDFSDFDSFASDSADSADASD
ASDFFDFDFASFASFASFAFSFFSDASFASFASFAFS
>sequence_3
VEDFGSDGSDGSDGSDGSDGSDGSDG
dDFSDFSDFSDFSDFSDFSDFSDFSDF
SDGFDGSFDGSGSDGSDGSDGSDGSDG
My... (22 Replies)
Discussion started by: patrick87
22 Replies
5. Shell Programming and Scripting
Hi All,
I would like to print the content from the specific line of a file .
For example... i have file abc.txt which has 100 lines of code ,from this file i would like to print the content from 20,19,18th line......like that
Regards
Srikanth (4 Replies)
Discussion started by: srikanthg
4 Replies
6. Shell Programming and Scripting
Hi
I have a large text file and I want to split its content into multiple flies.
this large file contains several blocks of codes separated by a comment line for each block.
this comment line represents a directory path
So, when separate these blocks each into a separate file, This output... (7 Replies)
Discussion started by: turki_00
7 Replies
7. Shell Programming and Scripting
Hi All,
I have the file in this format
**** Results Data ****
Time or Step
1
2
20
0.000000000e+00 0s 0s 0s
1.024000000e+00 Us 0s 0s
1.100000000e+00 1s 0s 0s
1.100000001e+00 1s 0s 1s
2.024000000e+00 Us Us 1s
2.024000001e+00 ... (7 Replies)
Discussion started by: diehard
7 Replies
8. Shell Programming and Scripting
I have some users in one unix system and i want to search some files with specific to user and then i want to find some content inside that file so can u help me how we can implement it?
File location is as below.
/pools/home_unix/cmadireddy/work/models/model/
cmadireddy is user name.
now... (6 Replies)
Discussion started by: lathigara
6 Replies
9. Shell Programming and Scripting
Hi All,
I m very new to unix...i jus want to chk the content of file.
ma requirement is
if file has a content then
display it
else
dont display or something
pls specify which loop shalli use either for or while?? (20 Replies)
Discussion started by: navsan
20 Replies
10. Shell Programming and Scripting
Hi,
This is a bit lengthy problem, i will try to keep explaining it simple.
I have got a file say file1 that contains the following in it,
------------------------------------------------------------------------ r201463 | ngupta@gmail.com | 2012-06-19 22:02:20 +0530 (Tue, 19 Jun 2012) |... (3 Replies)
Discussion started by: Kashyap
3 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)