The '&&' makes the second part (mv -f) only execute when the first part worked fine, thus preventing you from accidentally overwriting the original file.
hello
whats the difference between excuting a shell script as
a)sh myscript.sh
b). ./myscript.sh
i noticed that my shell script works fine when i run it as . ./myscript
.sh but fails when i run it as sh myscript.sh could anybody explain why.
the shell script is very simple
... (9 Replies)
Hi,
Could you please explain me the below statement -- phrase wise.
sed -e :a -e '$q;N;'$cnt',$D;ba' abc.txt > xyz.txt
if suppose $cnt contains value: 10
it copies last 9 lines of abc.txt to xyz.txt
why it is copying last 9 rather than 10.
and also what is ba and $D over there in... (4 Replies)
$ echo a.bc | sed -e "s/\|/\\|/g"
|a|.|b|c|
$
Is the behavior of the sed statement expected ? Or is this a bug in sed ?
OS details
Linux 2.6.9-55.0.0.0.2.ELsmp #1 SMP Wed May 2 14:59:56 PDT 2007 i686 i686 i386 GNU/Linux (8 Replies)
I've written a small script to replace certain words in all the the files in a directory.
#!/bin/sh
#Get list of files to be edited
file_list=`ls -p`
for i in $file_list
do
echo "Processing $i"
alteredi=`echo "$i" | sed -e 's/\//d/'`
if
then
if
then
#actual altering (2 Replies)
Hi,
The following command works fine for me, but I could not grasp the logic working behind of sed command, it's obscure to me :( :confused:
echo "./20080916/core/audioex.amr" | sed "s%\(\)/%\1_%g"
o/p: ./20080916_core_audioex.amr
Could anyone please explain to me in detail, that how... (6 Replies)
Hi all,
I want to do a very simple thing with sed. I want to print out the line number of a disk I have defined in /etc/exports, so I do:
It's all good, but here's the problem. When I define md0 in a variable, I get nothing from sed:
Why is that? can anybody please help?
Thanks (2 Replies)
I suppose that this is not actually a script question, but I noticed this while working on a bash script homework assignment and I have been impressed with the quality of posts here -- so that is why I posted it here.
I have this text file named textfile:
total 40
-rwxr-xr-x 1 joeblow... (2 Replies)
I have a log with entries like:
out/target/product/imx53_smd/obj/STATIC_LIBRARIES/libwebcore_intermediates/Source/WebCore/bindings/V8HTMLVideoElement.cpp
: target thumb C++: libwebcore <=... (8 Replies)
Discussion started by: glev2005
8 Replies
LEARN ABOUT DEBIAN
shtool-table
SHTOOL-TABLE.TMP(1) GNU Portable Shell Tool SHTOOL-TABLE.TMP(1)NAME
shtool-table - GNU shtool pretty-print a field-separated list
SYNOPSIS
shtool table [-F|--field-sep sep] [-w|--width width] [-c|--columns cols] [-s|--strip strip] strsepstr...
DESCRIPTION
This pretty-prints a list of strings as a table.
OPTIONS
The following command line options are available.
-F, --field-sep sep
Separate columns using sep. Default is ":".
-w, --width width
Width of each column. Default is 15 characters.
-c, --columns cols
Number of columns. Default is 3.
-s, --strip strip
Strip off any characters past strip. Default is 79.
EXAMPLE
# shell script
shtool table -F , -w 5 -c 4 "1,2,3,4,5,6,7,8,9,10,11,12"
HISTORY
The GNU shtool table command was originally written by Ralf S. Engelschall <rse@engelschall.com> in 1999 for GNU shtool.
SEE ALSO shtool(1), tr(1), fmt(1), sh(1), awk(1), sed(1).
18-Jul-2008 shtool 2.0.8 SHTOOL-TABLE.TMP(1)