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UNIX for Dummies Questions & Answers
replace string in multiple files
Post 302567085 by jayan_jay on Saturday 22nd of October 2011 06:35:47 AM
10-22-2011
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1. UNIX for Dummies Questions & Answers
Hello
I'm trying to replace a string in multiple text files using the tcsh shell. For example I've got some files called test1 test2 test3 etc. Each of them contains "Hello World". Now I want to replace each "Hello" with "Howdy" using sed and a foreach loop.
I tried the following but it... (1 Reply)
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I used the following script
cd pathname
for y in `ls *`;
do sed "s/ABCD/DCBA/g" $y > temp; mv temp $y;
done
and it worked fine for finding and replacing strings with names etc. in all files of the given path.
I'm trying to replace a string which consists of path (location of file)
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I used the following script
cd pathname
for y in `ls *`;
do sed "s/ABCD/DCBA/g" $y > temp; mv temp $y;
done
and it worked fine for finding and replacing strings with names etc. in all files of the given path.
I'm trying to replace a string which consists of path (location of file)
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find . -type f -name "*.sql" -print|xargs perl -i -pe 's/pattern/replaced/g'
this is simple logic to find and replace in multiple files & folders
Hope this helps.
Thanks
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Can someone tell me how I can do this?
e.g:
a=$(echo -e wert trewt ertert ertert ertert erttert
erterte
rterter
tertertert
ert)
How do i replace the STRING with $a?
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I have a list of files all over a file system e.g.
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LEARN ABOUT OSF1
backup_listdumps
BACKUP_LISTDUMPS(8) AFS Command Reference BACKUP_LISTDUMPS(8) NAME
backup_listdumps - Displays the dump hierarchy from the Backup Database SYNOPSIS
backup listdumps [-localauth] [-cell <cell name>] [-help] backup listd [-l] [-c <cell name>] [-h] DESCRIPTION
The backup listdumps command displays the dump hierarchy from the Backup Database. OPTIONS
-localauth Constructs a server ticket using a key from the local /etc/openafs/server/KeyFile file. The backup command interpreter presents it to the Backup Server, Volume Server and VL Server during mutual authentication. Do not combine this flag with the -cell argument. For more details, see backup(8). -cell <cell name> Names the cell in which to run the command. Do not combine this argument with the -localauth flag. For more details, see backup(8). -help Prints the online help for this command. All other valid options are ignored. OUTPUT
The output displays the complete dump hierarchy and indicates the relationship between full and incremental dump levels. Full dump levels appear at the left margin. The hierarchy can include more than one full dump level; each one defines a subhierarchy of dump levels that can be used for dumping different volume sets. Incremental dump levels appear below and indented to the right of their parent dump levels, which can be either full or incremental. Since multiple incremental dump levels can share the same parent, an incremental dump level is not always directly below its parent; the amount of indentation indicates the parent/child relationship. If a dump level has an associated expiration date, it appears along with the level name. Absolute expiration dates appear in the format <dump_level> expires at <day month date time year> and relative expiration dates in the format <dump_level> expires in {<years>y | <months>m | <days>d} to indicate the number of years, months, days, or combination of the three after creation a dump expires when created at this level. EXAMPLES
The following example depicts six dump hierarchies. The expiration date for all incremental dump levels is 13 days so that the corresponding tapes can be recycled two weeks after their creation. The expiration dates for all full dump levels is 27 days so that the corresponding tapes can be recycled four weeks after their creation. % backup listdumps /week1 expires in 27d /tuesday expires in 13d /thursday expires in 13d /sunday expires in 13d /tuesday expires in 13d /thursday expires in 13d /week3 expires in 27d /tuesday expires in 13d /thursday expires in 13d /sunday expires in 13d /tuesday expires in 13d /thursday expires in 13d /sunday1 expires in 27d /monday1 expires in 13d /tuesday1 expires in 13d /wednesday1 expires in 13d /thursday1 expires in 13d /friday1 expires in 13d /sunday2 expires in 27d /monday2 expires in 13d /tuesday2 expires in 13d /wednesday2 expires in 13d /thursday2 expires in 13d /friday2 expires in 13d /sunday3 expires in 27d /monday1 expires in 13d /tuesday1 expires in 13d /wednesday1 expires in 13d /thursday1 expires in 13d /friday1 expires in 13d /sunday4 expires in 27d /monday2 expires in 13d /tuesday2 expires in 13d /wednesday2 expires in 13d /thursday2 expires in 13d /friday2 expires in 13d PRIVILEGE REQUIRED
The issuer must be listed in the /etc/openafs/server/UserList file on every machine where the Backup Server is running, or must be logged onto a server machine as the local superuser "root" if the -localauth flag is included. SEE ALSO
backup(8), backup_adddump(8), backup_deldump(8) COPYRIGHT
IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved. This documentation is covered by the IBM Public License Version 1.0. It was converted from HTML to POD by software written by Chas Williams and Russ Allbery, based on work by Alf Wachsmann and Elizabeth Cassell. OpenAFS 2012-03-26 BACKUP_LISTDUMPS(8)