12-29-2011
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
I have three files, basically:
file 1 - one line header
file 2 - big data (approx 80GB)
file 3 - a one line trailer
the existing process cats these together i.e cat file 1 file 2 file 3
however... I was thinking, surely it could be more efficient to insert the header (file 1) on the... (2 Replies)
Discussion started by: miwinter
2 Replies
2. UNIX for Dummies Questions & Answers
I need to change all Newline caracters (\12) to Fieldseparator(\34).
tr -A '\12' '\34' <file1> file2
Replace all delete (\177) with Newline (\12)
tr -A '\177' '\12' <file2> file3
Put the name of the file first in all rows.
awk '{printf "%s\34%s\n", FILENAME,$0} file3 > file4
So far no... (6 Replies)
Discussion started by: MrKlint
6 Replies
3. Shell Programming and Scripting
Hi All!
I have a script having one statement like.
cat xfile | sed 's/A/a/g' > xfile
I have two boxes which have similar version of linux running but one is greater in speed compared to other. Lets say A is faster than B.
A which is faster writes output as NULL
B which... (6 Replies)
Discussion started by: kbalaji_uk
6 Replies
4. Shell Programming and Scripting
I have to pass a sentence in a file, the specs are as:
cat run | sed 's/SRT/'$8'/g' | sed 's/plength/68/g' | sed 's/stcol/'$5'/g' | sed 's/encol/'$6'/g' | sed 's/brdtype/'$1'/g' | sed 's/brdtxt/'$3'/g' | sed 's/demotxt/Total '$2'/g' | sed 's/bantxt/ban_'$7'/g' | sed 's/validcodes/'$4'/g' > runx... (1 Reply)
Discussion started by: patilrakesh1984
1 Replies
5. Shell Programming and Scripting
Is there a way using grep or cat a file to create a new file based on whether the first 9 positions of each record is less than 399999999?
This is a fixed file format. (3 Replies)
Discussion started by: ski
3 Replies
6. UNIX for Dummies Questions & Answers
Can anyone give detailed and example for sed -i option.
Where can we use this option?:) (3 Replies)
Discussion started by: gwgreen1
3 Replies
7. Shell Programming and Scripting
Hi,
What does the following command do on files?
sed '1b; $d'
To me it just deletes the last line of the file. If so what is the significance of sed's 'b' option?
Thanks (1 Reply)
Discussion started by: royalibrahim
1 Replies
8. Shell Programming and Scripting
sed "s/^/8,A1,$dat,id2_3,/g" -e sed "s/$/,,,,,,,,,,,/g" temporary
wn m running this script m getting a error... plz help me with this....
O/p
sed: -e expression #1, char 3: unterminated `s' command
---------- Post updated at 11:35 AM ---------- Previous update was at 11:33 AM... (7 Replies)
Discussion started by: nikhil jain
7 Replies
9. Shell Programming and Scripting
Hi i am facing problem with sed -n option could you please help me on this, i have a file test the contents of the file is
width="75">10/0 4/12</td>^M><a href='courtorders/100412zr.pdf' target="_blank">Miscellaneous Order</a></td>^M width="75">10/01/12</td>^M><a href='courtorde... (8 Replies)
Discussion started by: ragilla
8 Replies
10. UNIX for Dummies Questions & Answers
I am trying to write a script to automatically create conf files and remote servers. I would like to do all this without creating files locally and copying them .
Here is what I have tried.
sitename=$1
prodserver=$2
ssh $prodserver "cat > /data/$sitename.conf" << cat |sed... (5 Replies)
Discussion started by: macrossm
5 Replies
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)