08-15-2006
Perl command line flags.
This is an explanation of the command line flags I used above.
'-i' edits files in place.
'-e' allows you to define Perl code to be executed
'-p' loops around every line in the file and performs the substitution
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I need to add spaces in between characters in a string variable.
Is there a shortcut? I know you can remove the spaces with sed, but does sed have a way to add them?
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I have: DATA01
I want it to be: D A T A 0 1
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2. Shell Programming and Scripting
I have a text file like this with hundreds of lines:
>cat file1.txt
1027123000
1027124000
1127125000
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1228143000
>
all lines are very similar and have exactly 10 digits. I want to separate the digits by twodigit and hyphens....like so,
>
10-27-12-30-00
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Hello
I want to add some value at the specific position.
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Hello
Welcome to UNIX Forums
Need Assistance
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i have following fixed width text(also has a delimiter)
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6. Shell Programming and Scripting
Hello All,
I have a variable which is having values like this..
$var=A,B,C,D,E,F,G,H
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Hello,
I want to add a sentence to "post column" those who are only less than 30 characters.Thank you very much for your help.
"category","title","post"
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Dear friends,
in file i want to add some characters at line no 60 i.e.
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if
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motility -
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LEARN ABOUT DEBIAN
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)