Hi,
in my korn shell I have this code:
typeset -uL1 rc
read rc?"Insert Y=Yes (default) or N=No >>"
If I press enter without value I wish to set rc=Y. This is my default.
This test: if ] then .... Do not work.
I hope in your help. Thanks in advance.
Regards,
Giovanni (3 Replies)
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Hi All
I have a field being returned from the DB that when opened in Vi shows a ^M before the rest of the field is displayed on the next line.
I need it so that the only newline character is the end of the... (14 Replies)
Hi,
I have a problem with sed. It doesn't recognize the "\n" character. It substitudes an "n", instead of introducing a new line.
This doesn't happend with print $ print "test \n \n" (it deos introduce two lines after hello)
(AIX)
$ sed s/bc/\n/g test.1 >test.2
$ cat test.1
bcdefg... (3 Replies)
Hi all,
I have a huge csv file with the following format of data,
Num SNPs, 549997
Total SNPs,555352
Num Samples, 157
SNP, SampleID, Allele1, Allele2
A001,AB1,A,A
A002,AB1,A,A
A003,AB1,A,A
...
...
...
I would like to write out a list of unique SNP (column 1). Could you... (3 Replies)
hi,
I want to search all files in the current working direcotry and to print in comma (,) seperated output. But I have two patterns to search for.
Files will be in ABC20100508.DAT format.
Search should happen on the format (ABC????????.DAT) along with date(20100508).
I can do a
ls... (2 Replies)
My input strings look something like this:
/dev/vs/dsk/group/vol
I want to print just "group" out of the line... which is always found between the 4th and 5th "/" in the string.
I figure I have to use awk, sed, or some combination to do this, but I've searched the forums and can't find... (2 Replies)
Hello , this is my first topic cause I need your little help:(
I got .txt file, and I want to find lines without letter 'a', so im writing:
grep "" list.txt (list.txt is the file of course)
and i have no idea why it's not working because it shows lines with a. (1 Reply)
Is there a simple way to find the longest common prefix of a space-separated list of strings, optionally by field?
For example, given input:
"aaa_b_cc aaa_b_cc_ddd aaa_b_cc aaa_b_cd"with no field separator, output:
aaa_b_cwith _ field separator, output:
aaa_bI have an awk solution which... (1 Reply)
Dear All,
assume i have a file with content:
<Start>6000</Start>
<Stop>7599</Stop>
the output is:
6000
7000
7100
7200
7300
7400
7599
how should we use any awk, sed, perl can do this task, means to extract the uniq prefixes from the start and stop prefix.
Thanks
Jimmy (3 Replies)
Discussion started by: jimmy_y
3 Replies
LEARN ABOUT LINUX
shtool-subst
SHTOOL-SUBST.TMP(1) GNU Portable Shell Tool SHTOOL-SUBST.TMP(1)NAME
shtool-subst - GNU shtool sed(1) substitution operations
SYNOPSIS
shtool subst [-v|--verbose] [-t|--trace] [-n|--nop] [-w|--warning] [-q|--quiet] [-s|--stealth] [-i|--interactive] [-b|--backup ext]
[-e|--exec cmd] [-f|--file cmd-file] [file] [file ...]
DESCRIPTION
This command applies one or more sed(1) substitution operations to stdin or any number of files.
OPTIONS
The following command line options are available.
-v, --verbose
Display some processing information.
-t, --trace
Enable the output of the essential shell commands which are executed.
-n, --nop
No operation mode. Actual execution of the essential shell commands which would be executed is suppressed.
-w, --warning
Show warning on substitution operation resulting in no content change on every file. The default is to show a warning on substitution
operations resulted in no content change on all files.
-q, --quiet
Suppress warning on substitution operation resulting in no content change.
-s, --stealth
Stealth operation. Preserve timestamp on file.
-i, --interactive
Enter interactive mode where the user has to approve each operation.
-b, --backup ext
Preserve backup of original file using file name extension ext. Default is to overwrite the original file.
-e, --exec cmd
Specify sed(1) command directly.
-f, --file cmd-file
Read sed(1) command from file.
EXAMPLE
# shell script
shtool subst -i -e 's;(c) ([0-9]*)-2000;(c) 1-2001;' *.[ch]
# RPM spec-file
%install
shtool subst -v -n
-e 's;^(prefix=).*;1 $RPM_BUILD_ROOT%{_prefix};g'
-e 's;^(sysconfdir=).*;1 $RPM_BUILD_ROOT%{_prefix}/etc;g'
`find . -name Makefile -print`
make install
HISTORY
The GNU shtool subst command was originally written by Ralf S. Engelschall <rse@engelschall.com> in 2001 for GNU shtool. It was prompted
by the need to have a uniform and convenient patching frontend to sed(1) operations in the OpenPKG package specifications.
SEE ALSO shtool(1), sed(1).
18-Jul-2008 shtool 2.0.8 SHTOOL-SUBST.TMP(1)