hi all, I have read similiar topics in this board, but i didn' t find the posting which is the same with the problem i face.. I try to extract string from the end. i try to do this:
num=abcdefghij
num2=${num:-5}
echo $num2 #this should print the last 5 characters (fghij)
but it doesn;t... (3 Replies)
Hi,
Could any one let me know, how can I cut the last field in below mentioned line.
net,-hopcount,0,-netmask,255.255.255.0,,,,,192.168.37.0,10.253.0.1
net,-hopcount,0,-netmask,255.255.255.0,,,,,192.168.1.0,10.253.0.1 net,-hopcount,0,-netmask,255.255.255.0,,,,,192.168.38.0,10.253.0.1... (3 Replies)
Hi all, how could i do ?
I have a Rss file, i want to extract only the Urls (many) matching http://www.xxx.com/trailers/ from that file and copy into another file.
like
"
<pubDate>Wed, 29 Apr 2009 00:00:00 PST</pubDate>
<content:encoded><!Apple - Movie Trailers - The Hangover"><img... (3 Replies)
Hello everyone, this is my first post so please give me a hand.
I apologize for my English, I'll try to be clear with my request.
I need to write a script (Bash) which finds all the variables defined in the file .h of the folder and then writes the name of the files .c where these variables are... (1 Reply)
Hi there,
i'm having some problems just making an awk script (i've tried this way, but other way can be posible for sure), for the next file
file.txt
<register>
<createProfile>
<result>0</result>
<description><!]></description>
<msisdn>34661461174</msisdn>
<inputOmvID>1</inputOmvID>... (6 Replies)
Hi All ,
I need to extract the strings that are matching with the pattern : CUST.<AnyStringOfAnyLength>.<AnyStringOfAnyLength> from a file and then write all these string into another file.
e.g. If a file SOURCE contains following lines :
IF(CUST.ABCD.EFGH==1) THEN
CUST.ABCD.EFGH =... (7 Replies)
Hi All,
I am pretty new to pattern matching and extraction using shell scripting. Could anyone please help me in extracting the word matching a pattern from a line in bash.
Input Sample (can vary between any of the 3 samples below):
1) Adaptec SCSI RAID 5445
2) Adaptec SCSI 5445S RAID
3)... (8 Replies)
Hello,
I can't seem to understand korn shell regular expression. I am trying to extract the tagfrom its own filename string.
var="LNX_1.2.0.0.af329a3da.tar"
whereby af329a3da is the tagI am trying to extract out from.
I am trying to avoid using IFS because future modifications... (5 Replies)
Hi All,
I am writing the following Perl Scrip and need your help in Pattern matching :
I have the following Shell Script that would read line by line from the file (file_svn) and would inturn calls the Perl Script:
#!/bin/bash
perl_path="/home/dev/filter"... (2 Replies)
Hi,
I have a string looks like the following:
USERS 32767.9844 UNDOTBS1 32767.9844 SYSAUX 32767.9844 SYSTEM 32767.9844 EMS 8192 EMS 8192 EMS_INDEXES 4096 EMS_INDEXES 4096 8 rows selected.
How do I extract a sub-string to get the expected output as following:
EMS 8192
EMS_INDEXES 4096
... (3 Replies)
Discussion started by: NetBear
3 Replies
LEARN ABOUT CENTOS
lksh
LKSH(1) BSD General Commands Manual LKSH(1)NAME
lksh -- Legacy Korn shell built on mksh
SYNOPSIS
lksh [-+abCefhiklmnprUuvXx] [-+o opt] [-c string | -s | file [args ...]]
DESCRIPTION
lksh is a command interpreter intended exclusively for running legacy shell scripts. It is built on mksh; refer to its manual page for
details on the scripting language. It is recommended to port scripts to mksh instead of relying on legacy or idiotic POSIX-mandated behav-
iour, since the MirBSD Korn Shell scripting language is much more consistent.
LEGACY MODE
lksh has the following differences from mksh:
o lksh is not suitable for use as /bin/sh.
o There is no explicit support for interactive use, nor any command line editing or history code. Hence, lksh is not suitable as a user's
login shell, either; use mksh instead.
o The KSH_VERSION string identifies lksh as ``LEGACY KSH'' instead of ``MIRBSD KSH''.
o lksh only offers the traditional ten file descriptors to scripts.
o lksh uses POSIX arithmetics, which has quite a few implications: The data type for arithmetics is the host ISO C long data type. Signed
integer wraparound is Undefined Behaviour. The sign of the result of a modulo operation with at least one negative operand is unspeci-
fied. Shift operations on negative numbers are unspecified. Division of the largest negative number by -1 is Undefined Behaviour. The
compiler is permitted to delete all data and crash the system if Undefined Behaviour occurs.
o The rotation arithmetic operators are not available.
o The shift arithmetic operators take all bits of the second operand into account; if they exceed permitted precision, the result is
unspecified.
o The GNU bash extension &> to redirect stdout and stderr in one go is not parsed.
o The mksh command line option -T is not available.
o Unless set -o posix is active, lksh always uses traditional mode for constructs like:
$ set -- $(getopt ab:c "$@")
$ echo $?
POSIX mandates this to show 0, but traditional mode passes through the errorlevel from the getopt(1) command.
o lksh, unlike AT&T UNIX ksh, does not keep file descriptors > 2 private.
SEE ALSO mksh(1)
https://www.mirbsd.org/mksh.htm
https://www.mirbsd.org/ksh-chan.htm
CAVEATS
lksh tries to make a cross between a legacy bourne/posix compatibl-ish shell and a legacy pdksh-alike but ``legacy'' is not exactly speci-
fied.
The set built-in command does not have all options one would expect from a full-blown mksh or pdksh.
Talk to the MirOS development team using the mailing list at <miros-mksh@mirbsd.org> or the #!/bin/mksh (or #ksh) IRC channel at
irc.freenode.net (Port 6697 SSL, 6667 unencrypted) if you need any further quirks or assistance, and consider migrating your legacy scripts
to work with mksh instead of requiring lksh.
MirBSD May 2, 2013 MirBSD