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UNIX for Dummies Questions & Answers
Find and replace a string in multiple files
Post 302143942 by pharos467 on Monday 5th of November 2007 01:02:58 PM
11-05-2007
Find and replace a string in multiple files
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)
say instead of ABCD i have to replace c:/mydocuments/pictures to
d:/mypics/personal , as metacharacters wont be searched in unix this script is failing to replace the string which has a path in it.
now my script is
cd pathname
for y in `ls *`;
do sed "s/'c:/mydocuments/pictures'/'d:/mypics/personal'/g" $y > temp; mv temp $y;
done
i tired giving the path in single quotes and double quotes, but i see error
sed: command garbled: s/'c:/mydocuments/pictures'/'d:/mypics/personal'/g
And all the contents of the files in the path are erased.
Is there any other way to work this out.
Thanks
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)
say instead of ABCD i have to replace c:/mydocuments/pictures to
d:/mypics/personal , as metacharacters wont be searched in unix this script is failing to replace the string which has a path in it.
now my script is
cd pathname
for y in `ls *`;
do sed "s/'c:/mydocuments/pictures'/'d:/mypics/personal'/g" $y > temp; mv temp $y;
done
i tired giving the path in single quotes and double quotes, but i see error
sed: command garbled: s/'c:/mydocuments/pictures'/'d:/mypics/personal'/g
And all the contents of the files in the path are erased.
Is there any other way to work this out.
Thanks
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LEARN ABOUT OSF1
pathchk
pathchk(1) General Commands Manual pathchk(1) NAME
pathchk - Checks path names SYNOPSIS
pathchk [-p] pathname... STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: pathchk: XCU5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. OPTIONS
Performs path name checks based on POSIX portability standards. An error message is sent if any of the following conditions are true: The byte length of the full path name is longer than allowed by POSIX standards ({_POSIX_PATH_MAX}). The byte length of a component is longer than allowed by POSIX standards ({_POSIX_NAME_MAX}). A character in any component is not in the portable file name character set. OPERANDS
The path name to be checked. DESCRIPTION
The pathchk command checks that one or more path names are valid (that is, they can be used to access or create a file without causing syn- tax errors) and portable (that is, no file name truncation will result). By default, the pathchk command checks each component of each path name specified by the pathname argument based on the underlying file system. If the -p option is not specified, pathchk sends an error message if any of the following conditions are true: The byte length of the full path name is longer than allowed by the system ({PATH_MAX} bytes). The byte length of a component is longer than allowed by the system ({NAME_MAX} bytes). Search permission is not allowed for a component. A character in any component is not valid in its containing directory. It is not considered an error if one or more components of a path name do not exist, as long as a file matching the path name specified by the pathname argument could be created without violating any of the preceding criteria. EXAMPLES
To check the validity and portability of the /u/bob/work/tempfiles path name, enter: pathchk /u/bob/work/tempfiles To check the validity and portability of the /u/bob/temp path name for POSIX standards, enter: pathchk -p /u/bob/temp ENVIRONMENT VARIABLES
The following environment variables affect the execution of pathchk: Provides a default value for the internationalization variables that are unset or null. If LANG is unset or null, the corresponding value from the default locale is used. If any of the internationalization variables contain an invalid setting, the utility behaves as if none of the variables had been defined. If set to a non-empty string value, overrides the values of all the other internationalization variables. Determines the locale for the interpretation of sequences of bytes of text data as characters (for example, single-byte as opposed to multibyte characters in arguments). Determines the locale for the format and contents of diagnostic messages written to standard error. Determines the location of message catalogues for the processing of LC_MESSAGES. FILES
System maximum values EXIT STATUS
The pathchk command returns the following exit values: All path name operands passed the checks. An error occurred. SEE ALSO
Commands: test(1) Files: limits(4) Standards: standards(5) pathchk(1)