I'm trying to grep a long ls by looking at the beginning of each filename for example:
Many files begin with yong_ho_free_2005...
Many files begin with yong_ho_2005...
I can't just use "grep yong_ho" otherwise It'll display both files.
So I'm trying to use a regex but my syntax is wrong.
... (2 Replies)
hi, i'm a beginner in Linux, actually i use andLinux,
i have a data file with 11 columns
170 N SER T 25 56.962 42.701 -133.423 1.00 87.04 N
171 CA SER T 25 57.076 41.790 -132.280 1.00 86.65 C
172 C SER T 25 57.766 40.492 -132.692 1.00 87.52 C
173 O SER T 25 58.653 39.988 -131.992 1.00 86.59... (6 Replies)
I am trying to write a simple if statement but that driving me crazy:eek: with syntactical erorrs.
This is what I managed to come up
#!/bin/ksh
USERNAME=`whoami`
if ;then
echo " you have logged in as report user"
elif ; then
echo " you have logged in as extract user"
else " I dont... (3 Replies)
Hi everyone,
I`ll try to be most clear I can explaining my help request.
I have 2 folders
Folder A-->This folder receives files through FTP constantly
Folder B-->The files from Folder A are unzipped and then processed in Folder B
Sometimes Folder A doesn`t contain all... (2 Replies)
awk '{if ($1 == "State:" && $2 == "Okay") {print system("uname -n")}}'
---------- Post updated at 01:20 AM ---------- Previous update was at 01:19 AM ----------
it is printing uname -n instead of printing the output of the command (8 Replies)
Hi,
I have line in input file as below:
3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL
My expected output for line in the file must be :
"1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL"
Can someone... (7 Replies)
Hi,
I hope this is the correct section in the forum to post as I'm trying to SSH from my MacBook.
I was looking to see whether ssh on my jailbroken iPhone 6s (10.3.1) still works fine and was following this old reddit guide. I installed OpenSSH&OpenSSL from Cydia and changed the password using... (7 Replies)
Hello.
System : opensuse leap 42.3
I have a bash script that build a text file.
I would like the last command doing :
print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt
where :
print_cmd ::= some printing... (1 Reply)
Discussion started by: jcdole
1 Replies
LEARN ABOUT MOJAVE
escape
escape(1) Mail Avenger 0.8.3 escape(1)NAME
escape - escape shell special characters in a string
SYNOPSIS
escape string
DESCRIPTION
escape prepends a "" character to all shell special characters in string, making it safe to compose a shell command with the result.
EXAMPLES
The following is a contrived example showing how one can unintentionally end up executing the contents of a string:
$ var='; echo gotcha!'
$ eval echo hi $var
hi
gotcha!
$
Using escape, one can avoid executing the contents of $var:
$ eval echo hi `escape "$var"`
hi ; echo gotcha!
$
A less contrived example is passing arguments to Mail Avenger bodytest commands containing possibly unsafe environment variables. For
example, you might write a hypothetical reject_bcc script to reject mail not explicitly addressed to the recipient:
#!/bin/sh
formail -x to -x cc -x resent-to -x resent-cc
| fgrep "$1" > /dev/null
&& exit 0
echo "<$1>.. address does not accept blind carbon copies"
exit 100
To invoke this script, passing it the recipient address as an argument, you would need to put the following in your Mail Avenger rcpt
script:
bodytest reject_bcc `escape "$RECIPIENT"`
SEE ALSO avenger(1),
The Mail Avenger home page: <http://www.mailavenger.org/>.
BUGS
escape is designed for the Bourne shell, which is what Mail Avenger scripts use. escape might or might not work with other shells.
AUTHOR
David Mazieres
Mail Avenger 0.8.3 2012-04-05 escape(1)