insert tab at beginning of each line in file

robotrock · 08-05-2010, 06:11 PM

Hello all,

Firstly, I've searched at length and can't seem to find the info so I decided to join this community and ask away. If this is a question that has been answered a billion times please point me in the right direction.

I am trying to create a shell script where a user can specify a file with a list of logins and the script will create a batch file with specific information in specific columns.

Example:

loginfile.txt has

User1
User2
User3

I need the output to be as below:

1 User1 Date 12/31/9999
2 User2 Date 12/31/9999
3 User3 Date 12/31/9999

Where the columns are separated as below.

1[tab][tab]User1[tab]date +%D[tab]12/31/9999
2[tab][tab]User2[tab]date +%D[tab]12/31/9999
3[tab][tab]User3[tab]date +%D[tab]12/31/9999

I can use the nl utility to get the numbers easily enough, but I need two tab separations between the number and the user list. Is there a sed command that will insert at the beginning of each line? If so I can just run nl after I get some tabs up in the front.

Any assistance is appreciated.

Meson · 08-05-2010, 06:19 PM

Code:

sed -i 's/^/\t\t/' <filename>

robotrock · 08-05-2010, 06:27 PM

well that was simple!...I feel silly now.

Thanks very much Meson!

Lexus45 · 08-13-2015, 10:08 AM

Hello.

I want to add a line to the file, and it must start with 2 tabs.

The original piece of text is this:

Code:

		Set(CDR(accountcode)=${CONTEXT});
		Set(NUMBER=${EXTEN});
		Dial(SIP/to-freeswitch/666);
		Hangup;

I'd like to get this:

Code:

		Set(CDR(accountcode)=${CONTEXT});
		Set(NUMBER=${EXTEN});
                Set(TIMEOUT(absolute)=1800);
		Dial(SIP/to-freeswitch/666);
		Hangup;

So, I do:

Code:

sed '/Dial/ i /\t\t\Set(TIMEOUT(absolute)=1800);' extensions.ael

And finally get not exactly what I want:

Code:

		Set(CDR(accountcode)=${CONTEXT});
		Set(NUMBER=${EXTEN});
/		Set(TIMEOUT(absolute)=1800);
		Dial(SIP/to-freeswitch/666);
		Hangup;

How can I get rid of '/' at the beginning of the line? Thank you.

auge · 08-13-2015, 11:33 AM

Here you go:

Quote:

sed 's/Dial/Set(TIMEOUT(absolute)=1800);\r\n\t\tDial/' extensions.ael

Lexus45 · 08-19-2015, 12:22 AM

One more question.

There are many lines like

Code:

AGI(${CIDCONVERT}/CONVERT,3823,${CALLERID(num)},Taxi-696 73823902290);
AGI(${CIDCONVERT}/CONVERT,3592,${CALLERID(num)},Office-557 35928888802,"BG");

and so on.

I'd like to add this to all lines having CIDCONVERT word before the last parenthesis:

Code:

,"RU"

To get this:

Code:

AGI(${CIDCONVERT}/CONVERT,3823,${CALLERID(num)},Taxi-696 73823902290,"RU");
AGI(${CIDCONVERT}/CONVERT,3592,${CALLERID(num)},Office-557 35928888802,"BG","RU");

Lexus45 · 08-19-2015, 12:31 AM

Oh... Seems that I've done it

Code:

sed '/CIDCONVERT/s/);/,"RU");/g' extensions.ael

ANd finally to remove just added everywhere ,"RU" if a line contains another country-code, for example ,"BG":

Code:

sed '/,"BG"/s/,"RU"//g' extensions_CIDCONVERT_OK.ael