05-28-2008
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hello, I'm trying to use grep or egrep to exclude a whole range of characters but how do I exclude both a single and a double quote.
It might be easier to say how do I use grep to find both single and double quotes.
grep ' ' " ' file
grep detects the first single quote within my... (4 Replies)
Discussion started by: Lindy_so
4 Replies
2. Shell Programming and Scripting
Hi,
I am trying to write the following command as an alias in my .bashrc file.
bjobs -u all | awk '{if (NR > 1) {username++;}}END{{print"\nJOBS BY USER:\n"} for (i in username) {print username,i;}{print"\n Total Jobs=",NR-1,"\n" }}'
The command simply puts how many jobs each user is... (2 Replies)
Discussion started by: jacekmaciek
2 Replies
3. Shell Programming and Scripting
Hi guys, I have a sed line in double quotes which works fine, but I want it to be in single quotes
here is the sed line
sed "/abc_def/s/\'.*\'/\'\${abc_def}\'/"
can some one give the equivalent to the above script in single quotes
Thanks a ton (5 Replies)
Discussion started by: sol_nov
5 Replies
4. UNIX for Dummies Questions & Answers
Unix superusers,
I am new to unix but would like to learn more about grep. I am very familiar with regular expressions as i have used them for searching text files in windows based text editors. Since I am not very familiar with Unix, I dont understand when one should use GREP with the... (2 Replies)
Discussion started by: george_vandelet
2 Replies
5. UNIX for Dummies Questions & Answers
Hi Unix experts,
Believe me, this forum has been really great help and I searched for many things that were already answered before open new post that were just new versions of old one, but with this one, I just can't simply move any forward.
This must be quite easy, but I cant find where I... (1 Reply)
Discussion started by: manolain
1 Replies
6. Shell Programming and Scripting
Hello. I'm trying to write a bash script that uses GNU screen and have hit a brick wall that has cost me many hours... (I'm sure it has something to do with quoting/globbing, which is why I post it here)
I can make a script that does the following just fine:
test.sh:
#!/bin/bash
# make... (2 Replies)
Discussion started by: jondecker76
2 Replies
7. UNIX for Dummies Questions & Answers
Hi i have to insert the below line into a specific line number of another file
export MBR_CNT_PRCP_TYPE_CODES_DEL="'01','02','04','05','49','55','UNK'"
I have passed the above line to a variable say ins_line. I have used below command to perform the insert
awk 'NR==3{print "'"${ins_line}"'"}1'... (1 Reply)
Discussion started by: sathishteradata
1 Replies
8. Shell Programming and Scripting
Hi,
Trying to change the prompt. I have the following code.
export PS1='
<${USER}@`hostname -s`>$ '
The hostname is not displayed
<abc@`hostname -s`>$ uname -a
AIX xyz 1 6 00F736154C00
<adcwl4h@`hostname -s`>$
If I use double quotes, then the hostname is printed properly but... (3 Replies)
Discussion started by: bobbygsk
3 Replies
9. Shell Programming and Scripting
Hi Froum.
I have tried in vain to find a solution for this problem - I'm trying to replace any double quotes within a quoted string with a single quote, leaving everything else as is.
I have the following data:
Before:
... (32 Replies)
Discussion started by: pchang
32 Replies
10. Shell Programming and Scripting
Hi All,
I'm unable to load the data using sql loader where there are double quotes within the double quotes As these are optionally enclosed by double quotes.
Sample Data :
"221100",138.00,"D","0019/1477","44012075","49938","49938/15043000","Television - 22" Refurbished - Airwave","Supply... (6 Replies)
Discussion started by: mlavanya
6 Replies
LEARN ABOUT CENTOS
symlinks
SYMLINKS(8) System Manager's Manual SYMLINKS(8)
NAME
symlinks - symbolic link maintenance utility
SYNOPSIS
symlinks [ -cdorstv ] dirlist
DESCRIPTION
symlinks is a useful utility for maintainers of FTP sites, CDROMs, and Linux software distributions. It scans directories for symbolic
links and lists them on stdout, often revealing flaws in the filesystem tree.
Each link is output with a classification of relative, absolute, dangling, messy, lengthy, or other_fs.
relative links are those expressed as paths relative to the directory in which the links reside, usually independent of the mount point of
the filesystem.
absolute links are those given as an absolute path from the root directory as indicated by a leading slash (/).
dangling links are those for which the target of the link does not currently exist. This commonly occurs for absolute links when a
filesystem is mounted at other than its customary mount point (such as when the normal root filesystem is mounted at /mnt after booting
from alternative media).
messy links are links which contain unnecessary slashes or dots in the path. These are cleaned up as well when -c is specified.
lengthy links are links which use "../" more than necessary in the path (eg. /bin/vi -> ../bin/vim) These are only detected when -s is
specified, and are only cleaned up when -c is also specified.
other_fs are those links whose target currently resides on a different filesystem from where symlinks was run (most useful with -r ).
OPTIONS
-c convert absolute links (within the same filesystem) to relative links. This permits links to maintain their validity regardless of
the mount point used for the filesystem -- a desirable setup in most cases. This option also causes any messy links to be cleaned
up, and, if -s was also specified, then lengthy links are also shortened. Links affected by -c are prefixed with changed in the
output.
-d causes dangling links to be removed.
-o fix links on other filesystems encountered while recursing. Normally, other filesystems encountered are not modified by symlinks.
-r recursively operate on subdirectories within the same filesystem.
-s causes lengthy links to be detected.
-t is used to test for what symlinks would do if -c were specified, but without really changing anything.
-v show all symbolic links. By default, relative links are not shown unless -v is specified.
BUGS
symlinks does not recurse or change links across filesystems.
AUTHOR
symlinks has been written by Mark Lord <mlord@pobox.com>, the original developer and maintainer of the IDE Performance Package for linux,
the Linux IDE Driver subsystem, hdparm, and a current day libata hacker.
SEE ALSO
symlink(2)
Version 1.4 October 2008 SYMLINKS(8)