Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Replacing Text in Text file

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Replacing Text in Text file
# 1  
Old 06-30-2008
Replacing Text in Text file
Hi Guys,

I am needing some help writing a shell script to replace the following in a text file

/opt/was/apps/was61

with some other path eg

/usr/blan/blah/blah.

I know that i can do it using sed or perl but just having difficulty writing the escape characters for it

All Help appreciated

Regards,
Chris
# 2  
Old 06-30-2008
Code:
sed 's!/opt/was/apps/was61!/usr/blan/blah/blah!'

Regards
# 3  
Old 06-30-2008
Replacing Text in Text file
sed 's!/opt/was/apps/was61!/usr/blan/blah/blah!' test.bak

Doesnt appear to work where test.bak is the file containing /opt/was/apps/was61

it spits out /usr/blan/blah/blah before the command prompt but doesnt change the file at all.

Anymore help would be much appreciated.

Regards
# 4  
Old 06-30-2008
sed doesn't change your file on the fly. use output redirection or if your sed support -i , you can use it.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Match text to lines in a file, iterate backwards until text or text substring matches, print to file

hi all, trying this using shell/bash with sed/awk/grep I have two files, one containing one column, the other containing multiple columns (comma delimited). file1.txt abc12345 def12345 ghi54321 ... file2.txt abc1,text1,texta abc,text2,textb def123,text3,textc gh,text4,textd... (6 Replies)
Discussion started by: shogun1970
6 Replies

2. Programming

Replacing a word of a text file, in C++ fstream

How to replace a word in text file using c++ fstream. Is there a way, without creating any temporary file. Could you please share pseudo code ??? (1 Reply)
Discussion started by: techmonk
1 Replies

3. UNIX for Dummies Questions & Answers

Replacing all cells that have a specific value in a text file

I have a space delimited text file where I want to replace all cells that are 0 with NA. However I cannot simply use 'sed/0/NA/g' because there are other 0's in the text file that are part of numbers. Example input: 896.933464285715 0 874.691732142857 866.404660714286 Output:... (1 Reply)
Discussion started by: evelibertine
1 Replies

4. Shell Programming and Scripting

Replacing in huge text file

I have huge text files (~120 MB)x100 which equivalents to ~11GB of data. The files contain pure numbers, actually the value of "phi" to 10 billion digits!! I know its huge!! Here are the last few lines of a file 0952899155 3233967444 3344925499 0276061529 7261968933 9683989044 3317145063... (14 Replies)
Discussion started by: shantanuthatte
14 Replies

5. UNIX for Dummies Questions & Answers

Replacing a column in a text file

Say I had a text file that contained four columns, like the following: Mack Christopher:237 Avondale Blvd:970-791-6419:S Ben Macdonor:30 Dragon Rd:647-288-6395:B I'm making a loop that will replace the fourth column a line in the file with the contents of a variable 'access', but I have no... (6 Replies)
Discussion started by: Sotau
6 Replies

6. UNIX for Dummies Questions & Answers

Help parsing and replacing text with file name

Hi everyone, I'm having trouble figuring this one out. I have ~100 *.fa files with multiple lines of fasta sequences like this: file1.fa >xyzsequence atcatgcacac...... ataccgagagg..... atataccagag..... >abcsequence atgagatatat..... acacacggd..... atcgaacac.... agttccagat.... The... (2 Replies)
Discussion started by: mycoguy
2 Replies

7. Shell Programming and Scripting

Replacing text in a .csv file using Perl

I have played with this for some time but i dont seem like i am getting it right. I am trying to change the delimiters on a file so i can import it into a database. this file has rows of data separated by enter Right now the delimiters are represented by tabs and " ". e.g. "dlfkldfs... (9 Replies)
Discussion started by: salemh
9 Replies

8. Shell Programming and Scripting

replacing text with contents from another file

I'm trying to change the ramfs size in kernel .config automatically. I have a ramfs_size file generated with du -s cat ramfs_size 64512 I want to replace the linux .config's ramdisk size with the above value CONFIG_BLK_DEV_RAM_SIZE=73728 Right now I'm doing something dumb like: ... (3 Replies)
Discussion started by: amoeba
3 Replies

9. Shell Programming and Scripting

replacing text in a file, but...

Hi all, Very first post on this forums, hope you can help me with this scripting task. I have a big text file with over 3000 lines, some of those lines contain some text that I need to replace, lets say for simplicity the text to be replaced in those lines is "aaa" and I need it to replace it... (2 Replies)
Discussion started by: Angelseph
2 Replies

10. Shell Programming and Scripting

replacing strings with text from other file

Hi, Im trying to update some properties files with text from another file: file1 user=xyz file2 user= after script file2 user=xyz Im using this reading the $QUARTZURL,ETC... from quartz.properties: echo... (1 Reply)
Discussion started by: mc1392
1 Replies
Login or Register to Ask a Question