10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I need more explination on it, how it works
abcd="$(echo "$abcd" | sed 's/ //g')" >> ${LOGFILE} 2>&1
can any one suggest me on this?
Rgds,
LKR (1 Reply)
Discussion started by: lakshmanraok
1 Replies
2. UNIX for Dummies Questions & Answers
I need someone to tell me how exactly works the following code αfter /etc/passwd :eek::
cat /etc/passwd|grep "^:"|sed '1,$s/^\(*\):*:\(*\):.*$/ \1 \2 /'|sort -nrk3 -t:I want a good explanation to understand the code please (4 Replies)
Discussion started by: kotsos13
4 Replies
3. Shell Programming and Scripting
Can you please explain the following code plz?
my_cd=' '
while getopts :e: OPTION;
do
case "$OPTION" in
e) my_cd ="$OPTARG";;
esac
done
if ; then
echo " >>> ERROR - I am wrong"
echo " >>> ERROR - Hello"
exit 99
fi
What I don't understand is what is OPTION or... (3 Replies)
Discussion started by: RubinPat
3 Replies
4. UNIX for Dummies Questions & Answers
Its great someone provided this script that strips out a filename and extension but can someone explain how each line works?
file1='Jane Mid Doe.txt'
newfile='Jane.txt'
1) ext=${file1##*.}
2) filename=${file%%.???}
3) set -- $filename
4) newfile="1.$extension" (1 Reply)
Discussion started by: Lillyt
1 Replies
5. Shell Programming and Scripting
in /etc/init.d/networking of an ubuntu computer, I found this code:
if ifdown -a --exclude=lo; then
log_action_end_msg $?
else
log_action_end_msg $?
fi
Shouldn't it be replace by
ifdown -a --exclude=lo
... (0 Replies)
Discussion started by: raphinou
0 Replies
6. Shell Programming and Scripting
Hello everyone,
I found this command line in a website:
perl -pi.bak -we's/\z/Your new line\n/ if $. == 2;' your_text_file.txt
With this command line you can insert a new line anywhere you want in a text without overwriting what's in it.
-p causes perl to assume a loop around your... (4 Replies)
Discussion started by: goude
4 Replies
7. Shell Programming and Scripting
Hi All,
can you please explain me the meaning of this line--
BackupLocation="/inpass/abc"
Parent=$(expr $BackupLocation : '\(.*\)/.*' \| $BackupLocation)
when i ran this as a command also it did not show me anything so could not get the purpose of this line.
Explain it please. (3 Replies)
Discussion started by: namishtiwari
3 Replies
8. UNIX and Linux Applications
Hi am having a c pgm. It has the include files (unistd.h,sys/types.h,win.h,scr.h,curses.h,stdarg.h and color.h). I don't know the purpose of these include files. will u plz explain me. (1 Reply)
Discussion started by: Mari.kb
1 Replies
9. Shell Programming and Scripting
how does below tr command replace nonletters with newlines?
I think I understand tr -cs '\n' part.. but what is
A-Za-z\' <--- what is this??
tr -cs A-Za-z\' '\n' |
-c --complement
-s, --squeeze-repeats
replace each input sequence of a repeated character that is... (1 Reply)
Discussion started by: convenientstore
1 Replies
10. Shell Programming and Scripting
how does below tr command replace nonletters with newlines?
I think I understand tr -cs '\n' part.. but what is
A-Za-z\' <--- what is this??
tr -cs A-Za-z\' '\n' |
-c --complement
-s, --squeeze-repeats
replace each input sequence of a repeated character that is... (0 Replies)
Discussion started by: convenientstore
0 Replies
